51573737 has 4 divisors (see below), whose sum is σ = 51589776. Its totient is φ = 51557700.

The previous prime is 51573721. The next prime is 51573749. The reversal of 51573737 is 73737515.

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: 73737515 = 5 ⋅14747503.

It is a cyclic number.

It is not a de Polignac number, because 51573737 - 2⁴ = 51573721 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 51573737.

It is not an unprimeable number, because it can be changed into a prime (51573707) 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, 1343 + ... + 10244.

It is an arithmetic number, because the mean of its divisors is an integer number (12897444).

Almost surely, 2^51573737 is an apocalyptic number.

It is an amenable number.

51573737 is a deficient number, since it is larger than the sum of its proper divisors (16039).

51573737 is a wasteful number, since it uses less digits than its factorization.

51573737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16038.

The product of its digits is 77175, while the sum is 38.

The square root of 51573737 is about 7181.4857097957. The cubic root of 51573737 is about 372.2284241865.

The spelling of 51573737 in words is "fifty-one million, five hundred seventy-three thousand, seven hundred thirty-seven".