531404051 has 4 divisors (see below), whose sum is σ = 536370552. Its totient is φ = 526437552.

The previous prime is 531404047. The next prime is 531404053. The reversal of 531404051 is 150404135.

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

It is a cyclic number.

It is not a de Polignac number, because 531404051 - 2² = 531404047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531404053) 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, 2483090 + ... + 2483303.

It is an arithmetic number, because the mean of its divisors is an integer number (134092638).

Almost surely, 2^531404051 is an apocalyptic number.

531404051 is a deficient number, since it is larger than the sum of its proper divisors (4966501).

531404051 is a wasteful number, since it uses less digits than its factorization.

531404051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966500.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 531404051 is about 23052.2027363981. The cubic root of 531404051 is about 809.9812275282.

Adding to 531404051 its reverse (150404135), we get a palindrome (681808186).

The spelling of 531404051 in words is "five hundred thirty-one million, four hundred four thousand, fifty-one".