51148072 has 8 divisors (see below), whose sum is σ = 95902650. Its totient is φ = 25574032.

The previous prime is 51148061. The next prime is 51148091. The reversal of 51148072 is 27084115.

It can be written as a sum of positive squares in only one way, i.e., 48916036 + 2232036 = 6994^2 + 1494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×51148072² = 5232250538634368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51148072.

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, 3196747 + ... + 3196762.

Almost surely, 2^51148072 is an apocalyptic number.

It is an amenable number.

51148072 is a deficient number, since it is larger than the sum of its proper divisors (44754578).

51148072 is a wasteful number, since it uses less digits than its factorization.

51148072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6393515 (or 6393511 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 51148072 is about 7151.7880281787. The cubic root of 51148072 is about 371.2015285869.

The spelling of 51148072 in words is "fifty-one million, one hundred forty-eight thousand, seventy-two".