51090417 has 24 divisors (see below), whose sum is σ = 84552000. Its totient is φ = 29121120.

The previous prime is 51090379. The next prime is 51090419. The reversal of 51090417 is 71409015.

It is not a de Polignac number, because 51090417 - 2⁶ = 51090353 is a prime.

It is a super-2 number, since 2×51090417² = 5220461418467778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51090419) 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, 33334 + ... + 34832.

It is an arithmetic number, because the mean of its divisors is an integer number (3523000).

Almost surely, 2^51090417 is an apocalyptic number.

It is an amenable number.

51090417 is a deficient number, since it is larger than the sum of its proper divisors (33461583).

51090417 is a wasteful number, since it uses less digits than its factorization.

51090417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2050 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 51090417 is about 7147.7560814566. The cubic root of 51090417 is about 371.0620011993.

The spelling of 51090417 in words is "fifty-one million, ninety thousand, four hundred seventeen".