51005360 has 40 divisors (see below), whose sum is σ = 135530016. Its totient is φ = 17487360.

The previous prime is 51005309. The next prime is 51005371. The reversal of 51005360 is 6350015.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44981 + ... + 46100.

Almost surely, 2^51005360 is an apocalyptic number.

It is an amenable number.

51005360 is an abundant number, since it is smaller than the sum of its proper divisors (84524656).

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

51005360 is a wasteful number, since it uses less digits than its factorization.

51005360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91101 (or 91095 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 51005360 is about 7141.8036937457. The cubic root of 51005360 is about 370.8559680948.

Adding to 51005360 its reverse (6350015), we get a palindrome (57355375).

The spelling of 51005360 in words is "fifty-one million, five thousand, three hundred sixty".