51115448 has 8 divisors (see below), whose sum is σ = 95841480. Its totient is φ = 25557720.

The previous prime is 51115423. The next prime is 51115457. The reversal of 51115448 is 84451115.

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

It is a super-2 number, since 2×51115448² = 5225578048481408, 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 51115448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194708 + ... + 3194723.

It is an arithmetic number, because the mean of its divisors is an integer number (11980185).

Almost surely, 2^51115448 is an apocalyptic number.

It is an amenable number.

51115448 is a deficient number, since it is larger than the sum of its proper divisors (44726032).

51115448 is a wasteful number, since it uses less digits than its factorization.

51115448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6389437 (or 6389433 counting only the distinct ones).

The product of its digits is 3200, while the sum is 29.

The square root of 51115448 is about 7149.5068361391. The cubic root of 51115448 is about 371.1225900994.

The spelling of 51115448 in words is "fifty-one million, one hundred fifteen thousand, four hundred forty-eight".