51331134 has 16 divisors (see below), whose sum is σ = 104346000. Its totient is φ = 16829760.

The previous prime is 51331117. The next prime is 51331151. The reversal of 51331134 is 43113315.

It is an interprime number because it is at equal distance from previous prime (51331117) and next prime (51331151).

It is a self number, because there is not a number n which added to its sum of digits gives 51331134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69759 + ... + 70490.

It is an arithmetic number, because the mean of its divisors is an integer number (6521625).

Almost surely, 2^51331134 is an apocalyptic number.

51331134 is an abundant number, since it is smaller than the sum of its proper divisors (53014866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51331134 is a wasteful number, since it uses less digits than its factorization.

51331134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140315.

The product of its digits is 540, while the sum is 21.

The square root of 51331134 is about 7164.5749350537. The cubic root of 51331134 is about 371.6438521078.

Adding to 51331134 its reverse (43113315), we get a palindrome (94444449).

The spelling of 51331134 in words is "fifty-one million, three hundred thirty-one thousand, one hundred thirty-four".