51150689 has 4 divisors (see below), whose sum is σ = 53374656. Its totient is φ = 48926724.

The previous prime is 51150677. The next prime is 51150691. The reversal of 51150689 is 98605115.

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 51150689 - 2¹² = 51146593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51150089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111949 + ... + 1111994.

It is an arithmetic number, because the mean of its divisors is an integer number (13343664).

Almost surely, 2^51150689 is an apocalyptic number.

It is an amenable number.

51150689 is a deficient number, since it is larger than the sum of its proper divisors (2223967).

51150689 is a wasteful number, since it uses less digits than its factorization.

51150689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223966.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 51150689 is about 7151.9709870776. The cubic root of 51150689 is about 371.2078593425.

The spelling of 51150689 in words is "fifty-one million, one hundred fifty thousand, six hundred eighty-nine".