51880957 has 4 divisors (see below), whose sum is σ = 54932796. Its totient is φ = 48829120.

The previous prime is 51880879. The next prime is 51880987. The reversal of 51880957 is 75908815.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21288996 + 30591961 = 4614^2 + 5531^2 .

It is a cyclic number.

It is not a de Polignac number, because 51880957 - 2¹⁵ = 51848189 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 (51880987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1525894 + ... + 1525927.

It is an arithmetic number, because the mean of its divisors is an integer number (13733199).

Almost surely, 2^51880957 is an apocalyptic number.

It is an amenable number.

51880957 is a deficient number, since it is larger than the sum of its proper divisors (3051839).

51880957 is a wasteful number, since it uses less digits than its factorization.

51880957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051838.

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 51880957 is about 7202.8436745497. The cubic root of 51880957 is about 372.9660715641.

The spelling of 51880957 in words is "fifty-one million, eight hundred eighty thousand, nine hundred fifty-seven".