51350631 has 8 divisors (see below), whose sum is σ = 68960640. Its totient is φ = 33987192.

The previous prime is 51350627. The next prime is 51350641. The reversal of 51350631 is 13605315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51350631 - 2² = 51350627 is a prime.

It is a super-2 number, since 2×51350631² = 5273774608196322, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51350641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61155 + ... + 61988.

It is an arithmetic number, because the mean of its divisors is an integer number (8620080).

Almost surely, 2^51350631 is an apocalyptic number.

51350631 is a deficient number, since it is larger than the sum of its proper divisors (17610009).

51350631 is a wasteful number, since it uses less digits than its factorization.

51350631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123285.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 51350631 is about 7165.9354588218. The cubic root of 51350631 is about 371.6908997273.

Adding to 51350631 its reverse (13605315), we get a palindrome (64955946).

The spelling of 51350631 in words is "fifty-one million, three hundred fifty thousand, six hundred thirty-one".