51772637 has 4 divisors (see below), whose sum is σ = 59168736. Its totient is φ = 44376540.

The previous prime is 51772631. The next prime is 51772639. The reversal of 51772637 is 73627715.

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 51772637 - 2¹⁴ = 51756253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51772637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51772631) 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, 3698039 + ... + 3698052.

It is an arithmetic number, because the mean of its divisors is an integer number (14792184).

Almost surely, 2^51772637 is an apocalyptic number.

It is an amenable number.

51772637 is a deficient number, since it is larger than the sum of its proper divisors (7396099).

51772637 is an equidigital number, since it uses as much as digits as its factorization.

51772637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7396098.

The product of its digits is 61740, while the sum is 38.

The square root of 51772637 is about 7195.3204932095. The cubic root of 51772637 is about 372.7063241467.

The spelling of 51772637 in words is "fifty-one million, seven hundred seventy-two thousand, six hundred thirty-seven".