76426531 has 4 divisors (see below), whose sum is σ = 80449000. Its totient is φ = 72404064.

The previous prime is 76426517. The next prime is 76426561. The reversal of 76426531 is 13562467.

It is a happy number.

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 76426531 - 2²⁵ = 42872099 is a prime.

It is a super-2 number, since 2×76426531² = 11682029281387922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76426561) 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, 2011206 + ... + 2011243.

It is an arithmetic number, because the mean of its divisors is an integer number (20112250).

Almost surely, 2^76426531 is an apocalyptic number.

76426531 is a deficient number, since it is larger than the sum of its proper divisors (4022469).

76426531 is a wasteful number, since it uses less digits than its factorization.

76426531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022468.

The product of its digits is 30240, while the sum is 34.

The square root of 76426531 is about 8742.2268902151. The cubic root of 76426531 is about 424.3732973138.

Adding to 76426531 its reverse (13562467), we get a palindrome (89988998).

The spelling of 76426531 in words is "seventy-six million, four hundred twenty-six thousand, five hundred thirty-one".