245502531 has 6 divisors (see below), whose sum is σ = 354614780. Its totient is φ = 163668348.

The previous prime is 245502503. The next prime is 245502563. The reversal of 245502531 is 135205542.

It is a happy number.

It is not a de Polignac number, because 245502531 - 2⁷ = 245502403 is a prime.

It is a super-2 number, since 2×245502531² = 120542985454811922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245502495 and 245502504.

It is not an unprimeable number, because it can be changed into a prime (245502031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13639021 + ... + 13639038.

Almost surely, 2^245502531 is an apocalyptic number.

245502531 is a deficient number, since it is larger than the sum of its proper divisors (109112249).

245502531 is a wasteful number, since it uses less digits than its factorization.

245502531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27278065 (or 27278062 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 245502531 is about 15668.5203832398. The cubic root of 245502531 is about 626.1600054744.

The spelling of 245502531 in words is "two hundred forty-five million, five hundred two thousand, five hundred thirty-one".