51144237 has 16 divisors (see below), whose sum is σ = 75888000. Its totient is φ = 34042752.

The previous prime is 51144187. The next prime is 51144263. The reversal of 51144237 is 73244115.

It is not a de Polignac number, because 51144237 - 2¹⁶ = 51078701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 51144237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51144277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24064 + ... + 26102.

It is an arithmetic number, because the mean of its divisors is an integer number (4743000).

Almost surely, 2^51144237 is an apocalyptic number.

It is an amenable number.

51144237 is a deficient number, since it is larger than the sum of its proper divisors (24743763).

51144237 is a wasteful number, since it uses less digits than its factorization.

51144237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977 (or 2971 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 51144237 is about 7151.5199083831. The cubic root of 51144237 is about 371.1922509909.

The spelling of 51144237 in words is "fifty-one million, one hundred forty-four thousand, two hundred thirty-seven".