51520046 has 8 divisors (see below), whose sum is σ = 80640144. Its totient is φ = 24640000.

The previous prime is 51520043. The next prime is 51520093. The reversal of 51520046 is 64002515.

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

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51520043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559955 + ... + 560046.

It is an arithmetic number, because the mean of its divisors is an integer number (10080018).

Almost surely, 2^51520046 is an apocalyptic number.

51520046 is a deficient number, since it is larger than the sum of its proper divisors (29120098).

51520046 is a wasteful number, since it uses less digits than its factorization.

51520046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120026.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51520046 is about 7177.7465823196. The cubic root of 51520046 is about 372.0992094818.

The spelling of 51520046 in words is "fifty-one million, five hundred twenty thousand, forty-six".