51964574 has 4 divisors (see below), whose sum is σ = 77946864. Its totient is φ = 25982286.

The previous prime is 51964571. The next prime is 51964603. The reversal of 51964574 is 47546915.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51964571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12991142 + ... + 12991145.

It is an arithmetic number, because the mean of its divisors is an integer number (19486716).

Almost surely, 2^51964574 is an apocalyptic number.

51964574 is a deficient number, since it is larger than the sum of its proper divisors (25982290).

51964574 is a wasteful number, since it uses less digits than its factorization.

51964574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25982289.

The product of its digits is 151200, while the sum is 41.

The square root of 51964574 is about 7208.6457812824. The cubic root of 51964574 is about 373.1663349258.

The spelling of 51964574 in words is "fifty-one million, nine hundred sixty-four thousand, five hundred seventy-four".