51401634 has 16 divisors (see below), whose sum is σ = 103327488. Its totient is φ = 17046512.

The previous prime is 51401633. The next prime is 51401639. The reversal of 51401634 is 43610415.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51401633) 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, 20562 + ... + 22925.

It is an arithmetic number, because the mean of its divisors is an integer number (6457968).

Almost surely, 2^51401634 is an apocalyptic number.

51401634 is an abundant number, since it is smaller than the sum of its proper divisors (51925854).

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

51401634 is a wasteful number, since it uses less digits than its factorization.

51401634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43689.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 51401634 is about 7169.4932875343. The cubic root of 51401634 is about 371.8139172229.

The spelling of 51401634 in words is "fifty-one million, four hundred one thousand, six hundred thirty-four".