151665253 has 4 divisors (see below), whose sum is σ = 151715808. Its totient is φ = 151614700.

The previous prime is 151665233. The next prime is 151665271. The reversal of 151665253 is 352566151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352566151 = 7 ⋅50366593.

It is a cyclic number.

It is not a de Polignac number, because 151665253 - 2¹³ = 151657061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151665233) 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, 20473 + ... + 26878.

It is an arithmetic number, because the mean of its divisors is an integer number (37928952).

Almost surely, 2^151665253 is an apocalyptic number.

It is an amenable number.

151665253 is a deficient number, since it is larger than the sum of its proper divisors (50555).

151665253 is an equidigital number, since it uses as much as digits as its factorization.

151665253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50554.

The product of its digits is 27000, while the sum is 34.

The square root of 151665253 is about 12315.2447397524. The cubic root of 151665253 is about 533.2882701075.

The spelling of 151665253 in words is "one hundred fifty-one million, six hundred sixty-five thousand, two hundred fifty-three".