51190372 has 6 divisors (see below), whose sum is σ = 89583158. Its totient is φ = 25595184.

The previous prime is 51190369. The next prime is 51190409. The reversal of 51190372 is 27309115.

It can be written as a sum of positive squares in only one way, i.e., 34739236 + 16451136 = 5894^2 + 4056^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51190372.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6398793 + ... + 6398800.

Almost surely, 2^51190372 is an apocalyptic number.

It is an amenable number.

51190372 is a deficient number, since it is larger than the sum of its proper divisors (38392786).

51190372 is a wasteful number, since it uses less digits than its factorization.

51190372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12797597 (or 12797595 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 51190372 is about 7154.7447194152. The cubic root of 51190372 is about 371.3038295959.

Adding to 51190372 its reverse (27309115), we get a palindrome (78499487).

The spelling of 51190372 in words is "fifty-one million, one hundred ninety thousand, three hundred seventy-two".