51270372 has 18 divisors (see below), whose sum is σ = 129600198. Its totient is φ = 17090112.

The previous prime is 51270367. The next prime is 51270397. The reversal of 51270372 is 27307215.

It can be written as a sum of positive squares in only one way, i.e., 45481536 + 5788836 = 6744^2 + 2406^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 712053 + ... + 712124.

It is an arithmetic number, because the mean of its divisors is an integer number (7200011).

Almost surely, 2^51270372 is an apocalyptic number.

It is an amenable number.

51270372 is an abundant number, since it is smaller than the sum of its proper divisors (78329826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51270372 is a wasteful number, since it uses less digits than its factorization.

51270372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424187 (or 1424182 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 51270372 is about 7160.3332324690. Note that the first 3 decimals coincide. The cubic root of 51270372 is about 371.4971527068.

Adding to 51270372 its reverse (27307215), we get a palindrome (78577587).

The spelling of 51270372 in words is "fifty-one million, two hundred seventy thousand, three hundred seventy-two".