51004775 has 6 divisors (see below), whose sum is σ = 63245952. Its totient is φ = 40803800.

The previous prime is 51004771. The next prime is 51004781. The reversal of 51004775 is 57740015.

It is not a de Polignac number, because 51004775 - 2² = 51004771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51004771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1020071 + ... + 1020120.

It is an arithmetic number, because the mean of its divisors is an integer number (10540992).

Almost surely, 2^51004775 is an apocalyptic number.

51004775 is a deficient number, since it is larger than the sum of its proper divisors (12241177).

51004775 is a wasteful number, since it uses less digits than its factorization.

51004775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040201 (or 2040196 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 51004775 is about 7141.7627375880. The cubic root of 51004775 is about 370.8545502596.

The spelling of 51004775 in words is "fifty-one million, four thousand, seven hundred seventy-five".