51148364 has 6 divisors (see below), whose sum is σ = 89509644. Its totient is φ = 25574180.

The previous prime is 51148351. The next prime is 51148367. The reversal of 51148364 is 46384115.

It is a self number, because there is not a number n which added to its sum of digits gives 51148364.

It is not an unprimeable number, because it can be changed into a prime (51148367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6393542 + ... + 6393549.

It is an arithmetic number, because the mean of its divisors is an integer number (14918274).

Almost surely, 2^51148364 is an apocalyptic number.

It is an amenable number.

51148364 is a deficient number, since it is larger than the sum of its proper divisors (38361280).

51148364 is a wasteful number, since it uses less digits than its factorization.

51148364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12787095 (or 12787093 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 51148364 is about 7151.8084426248. The cubic root of 51148364 is about 371.2022349716.

The spelling of 51148364 in words is "fifty-one million, one hundred forty-eight thousand, three hundred sixty-four".