51020475 has 24 divisors (see below), whose sum is σ = 92023872. Its totient is φ = 24736800.

The previous prime is 51020471. The next prime is 51020507. The reversal of 51020475 is 57402015.

It is not a de Polignac number, because 51020475 - 2² = 51020471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51020471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30097 + ... + 31746.

It is an arithmetic number, because the mean of its divisors is an integer number (3834328).

Almost surely, 2^51020475 is an apocalyptic number.

51020475 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51020475 is a deficient number, since it is larger than the sum of its proper divisors (41003397).

51020475 is a wasteful number, since it uses less digits than its factorization.

51020475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61867 (or 61862 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 51020475 is about 7142.8618214270. The cubic root of 51020475 is about 370.8925978028.

The spelling of 51020475 in words is "fifty-one million, twenty thousand, four hundred seventy-five".