51290760 has 32 divisors (see below), whose sum is σ = 153872640. Its totient is φ = 13677504.

The previous prime is 51290753. The next prime is 51290761. The reversal of 51290760 is 6709215.

It is a super-2 number, since 2×51290760² = 5261484122755200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (51290761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213592 + ... + 213831.

It is an arithmetic number, because the mean of its divisors is an integer number (4808520).

Almost surely, 2^51290760 is an apocalyptic number.

It is an amenable number.

51290760 is an abundant number, since it is smaller than the sum of its proper divisors (102581880).

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

51290760 is a wasteful number, since it uses less digits than its factorization.

51290760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427437 (or 427433 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 51290760 is about 7161.7567677212. The cubic root of 51290760 is about 371.5463889415.

Adding to 51290760 its reverse (6709215), we get a palindrome (57999975).

The spelling of 51290760 in words is "fifty-one million, two hundred ninety thousand, seven hundred sixty".