245020531 has 12 divisors (see below), whose sum is σ = 286122672. Its totient is φ = 209208048.

The previous prime is 245020519. The next prime is 245020543. The reversal of 245020531 is 135020542.

It is an interprime number because it is at equal distance from previous prime (245020519) and next prime (245020543).

It is not a de Polignac number, because 245020531 - 2⁹ = 245020019 is a prime.

It is a super-2 number, since 2×245020531² = 120070121223043922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245020511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3381 + ... + 22393.

It is an arithmetic number, because the mean of its divisors is an integer number (23843556).

Almost surely, 2^245020531 is an apocalyptic number.

245020531 is a deficient number, since it is larger than the sum of its proper divisors (41102141).

245020531 is a wasteful number, since it uses less digits than its factorization.

245020531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19290 (or 19283 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 245020531 is about 15653.1316674971. The cubic root of 245020531 is about 625.7499528732.

The spelling of 245020531 in words is "two hundred forty-five million, twenty thousand, five hundred thirty-one".