53006631 has 4 divisors (see below), whose sum is σ = 70675512. Its totient is φ = 35337752.

The previous prime is 53006627. The next prime is 53006633. The reversal of 53006631 is 13660035.

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 53006631 - 2² = 53006627 is a prime.

It is a super-2 number, since 2×53006631² = 5619405859940322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53006633) 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, 8834436 + ... + 8834441.

It is an arithmetic number, because the mean of its divisors is an integer number (17668878).

Almost surely, 2^53006631 is an apocalyptic number.

53006631 is a deficient number, since it is larger than the sum of its proper divisors (17668881).

53006631 is a wasteful number, since it uses less digits than its factorization.

53006631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17668880.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 53006631 is about 7280.5652939864. The cubic root of 53006631 is about 375.6442401341.

Adding to 53006631 its reverse (13660035), we get a palindrome (66666666).

The spelling of 53006631 in words is "fifty-three million, six thousand, six hundred thirty-one".