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152520253 = 374122169
BaseRepresentation
bin10010001011101…
…00011000111101
3101121222211110021
421011310120331
5303021122003
623045012141
73531254314
oct1105643075
9347884407
10152520253
11791037a6
12430b4051
13257a2092
141638327b
15d5cb2bd
hex917463d

152520253 has 4 divisors (see below), whose sum is σ = 156642460. Its totient is φ = 148398048.

The previous prime is 152520233. The next prime is 152520289. The reversal of 152520253 is 352025251.

It is a happy number.

152520253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352025251 = 2391472909.

It can be written as a sum of positive squares in 2 ways, for example, as 59552089 + 92968164 = 7717^2 + 9642^2 .

It is a cyclic number.

It is not a de Polignac number, because 152520253 - 221 = 150423101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152520223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2061048 + ... + 2061121.

It is an arithmetic number, because the mean of its divisors is an integer number (39160615).

Almost surely, 2152520253 is an apocalyptic number.

It is an amenable number.

152520253 is a deficient number, since it is larger than the sum of its proper divisors (4122207).

152520253 is an equidigital number, since it uses as much as digits as its factorization.

152520253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4122206.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 152520253 is about 12349.9090280050. The cubic root of 152520253 is about 534.2885153200.

The spelling of 152520253 in words is "one hundred fifty-two million, five hundred twenty thousand, two hundred fifty-three".

Divisors: 1 37 4122169 152520253