253145501 has 4 divisors (see below), whose sum is σ = 289309152. Its totient is φ = 216981852.

The previous prime is 253145489. The next prime is 253145507. The reversal of 253145501 is 105541352.

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.

It is a cyclic number.

It is not a de Polignac number, because 253145501 - 2¹⁰ = 253144477 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 (253145507) 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, 18081815 + ... + 18081828.

It is an arithmetic number, because the mean of its divisors is an integer number (72327288).

Almost surely, 2^253145501 is an apocalyptic number.

It is an amenable number.

253145501 is a deficient number, since it is larger than the sum of its proper divisors (36163651).

253145501 is an equidigital number, since it uses as much as digits as its factorization.

253145501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36163650.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 253145501 is about 15910.5468479245. The cubic root of 253145501 is about 632.5915762566.

Adding to 253145501 its reverse (105541352), we get a palindrome (358686853).

The spelling of 253145501 in words is "two hundred fifty-three million, one hundred forty-five thousand, five hundred one".