51092621 has 4 divisors (see below), whose sum is σ = 51140544. Its totient is φ = 51044700.

The previous prime is 51092617. The next prime is 51092623. The reversal of 51092621 is 12629015.

51092621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51092621 - 2² = 51092617 is a prime.

It is a super-2 number, since 2×51092621² = 5220911841299282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51092623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22325 + ... + 24506.

It is an arithmetic number, because the mean of its divisors is an integer number (12785136).

Almost surely, 2^51092621 is an apocalyptic number.

It is an amenable number.

51092621 is a deficient number, since it is larger than the sum of its proper divisors (47923).

51092621 is a wasteful number, since it uses less digits than its factorization.

51092621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47922.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 51092621 is about 7147.9102540533. The cubic root of 51092621 is about 371.0673368959.

The spelling of 51092621 in words is "fifty-one million, ninety-two thousand, six hundred twenty-one".