51416520 has 32 divisors (see below), whose sum is σ = 154249920. Its totient is φ = 13711040.

The previous prime is 51416513. The next prime is 51416531. The reversal of 51416520 is 2561415.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214116 + ... + 214355.

It is an arithmetic number, because the mean of its divisors is an integer number (4820310).

Almost surely, 2^51416520 is an apocalyptic number.

It is an amenable number.

51416520 is an abundant number, since it is smaller than the sum of its proper divisors (102833400).

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

51416520 is a wasteful number, since it uses less digits than its factorization.

51416520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428485 (or 428481 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 51416520 is about 7170.5313610638. The cubic root of 51416520 is about 371.8498064047.

Adding to 51416520 its reverse (2561415), we get a palindrome (53977935).

The spelling of 51416520 in words is "fifty-one million, four hundred sixteen thousand, five hundred twenty".