51956737 has 4 divisors (see below), whose sum is σ = 59379136. Its totient is φ = 44534340.

The previous prime is 51956699. The next prime is 51956741. The reversal of 51956737 is 73765915.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73765915 = 5 ⋅14753183.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51956737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51956693 and 51956702.

It is not an unprimeable number, because it can be changed into a prime (51956767) 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, 3711189 + ... + 3711202.

It is an arithmetic number, because the mean of its divisors is an integer number (14844784).

Almost surely, 2^51956737 is an apocalyptic number.

It is an amenable number.

51956737 is a deficient number, since it is larger than the sum of its proper divisors (7422399).

51956737 is an equidigital number, since it uses as much as digits as its factorization.

51956737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7422398.

The product of its digits is 198450, while the sum is 43.

The square root of 51956737 is about 7208.1021774112. The cubic root of 51956737 is about 373.1475743782.

The spelling of 51956737 in words is "fifty-one million, nine hundred fifty-six thousand, seven hundred thirty-seven".