75227631 has 16 divisors (see below), whose sum is σ = 106861440. Its totient is φ = 46936800.

The previous prime is 75227627. The next prime is 75227651. The reversal of 75227631 is 13672257.

It is not a de Polignac number, because 75227631 - 2² = 75227627 is a prime.

It is a super-2 number, since 2×75227631² = 11318392931744322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75227592 and 75227601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75227611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3220 + ... + 12681.

It is an arithmetic number, because the mean of its divisors is an integer number (6678840).

Almost surely, 2^75227631 is an apocalyptic number.

75227631 is a deficient number, since it is larger than the sum of its proper divisors (31633809).

75227631 is a wasteful number, since it uses less digits than its factorization.

75227631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16006.

The product of its digits is 17640, while the sum is 33.

The square root of 75227631 is about 8673.3863628919. The cubic root of 75227631 is about 422.1425493430.

Adding to 75227631 its reverse (13672257), we get a palindrome (88899888).

The spelling of 75227631 in words is "seventy-five million, two hundred twenty-seven thousand, six hundred thirty-one".