531057011 has 4 divisors (see below), whose sum is σ = 559007400. Its totient is φ = 503106624.

The previous prime is 531056987. The next prime is 531057013. The reversal of 531057011 is 110750135.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-531057011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531057013) 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, 13975166 + ... + 13975203.

It is an arithmetic number, because the mean of its divisors is an integer number (139751850).

Almost surely, 2^531057011 is an apocalyptic number.

531057011 is a deficient number, since it is larger than the sum of its proper divisors (27950389).

531057011 is a wasteful number, since it uses less digits than its factorization.

531057011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27950388.

The product of its (nonzero) digits is 525, while the sum is 23.

The square root of 531057011 is about 23044.6742437380. The cubic root of 531057011 is about 809.8048663720.

The spelling of 531057011 in words is "five hundred thirty-one million, fifty-seven thousand, eleven".