51406894 has 32 divisors (see below), whose sum is σ = 101203200. Its totient is φ = 18973440.

The previous prime is 51406891. The next prime is 51406903. The reversal of 51406894 is 49860415.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51406891) 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, 5859 + ... + 11710.

It is an arithmetic number, because the mean of its divisors is an integer number (3162600).

Almost surely, 2^51406894 is an apocalyptic number.

51406894 is a deficient number, since it is larger than the sum of its proper divisors (49796306).

51406894 is a wasteful number, since it uses less digits than its factorization.

51406894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17608.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 51406894 is about 7169.8601102114. The cubic root of 51406894 is about 371.8265995338.

The spelling of 51406894 in words is "fifty-one million, four hundred six thousand, eight hundred ninety-four".