531265537 has 4 divisors (see below), whose sum is σ = 579562416. Its totient is φ = 482968660.

The previous prime is 531265519. The next prime is 531265543. The reversal of 531265537 is 735562135.

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 a de Polignac number, because none of the positive numbers 2^k-531265537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531265496 and 531265505.

It is not an unprimeable number, because it can be changed into a prime (531265597) 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, 24148423 + ... + 24148444.

It is an arithmetic number, because the mean of its divisors is an integer number (144890604).

Almost surely, 2^531265537 is an apocalyptic number.

It is an amenable number.

531265537 is a deficient number, since it is larger than the sum of its proper divisors (48296879).

531265537 is a wasteful number, since it uses less digits than its factorization.

531265537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48296878.

The product of its digits is 94500, while the sum is 37.

The square root of 531265537 is about 23049.1981856203. The cubic root of 531265537 is about 809.9108457481.

The spelling of 531265537 in words is "five hundred thirty-one million, two hundred sixty-five thousand, five hundred thirty-seven".