51477970 has 8 divisors (see below), whose sum is σ = 92660364. Its totient is φ = 20591184.

The previous prime is 51477953. The next prime is 51477977. The reversal of 51477970 is 7977415.

It can be written as a sum of positive squares in 2 ways, for example, as 50651689 + 826281 = 7117^2 + 909^2 .

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

It is not an unprimeable number, because it can be changed into a prime (51477977) 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, 2573889 + ... + 2573908.

Almost surely, 2^51477970 is an apocalyptic number.

51477970 is a deficient number, since it is larger than the sum of its proper divisors (41182394).

51477970 is a wasteful number, since it uses less digits than its factorization.

51477970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5147804.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 51477970 is about 7174.8149801929. The cubic root of 51477970 is about 371.9978850999.

The spelling of 51477970 in words is "fifty-one million, four hundred seventy-seven thousand, nine hundred seventy".