51198115 has 16 divisors (see below), whose sum is σ = 64343808. Its totient is φ = 39034336.

The previous prime is 51198097. The next prime is 51198131. The reversal of 51198115 is 51189115.

It is a cyclic number.

It is not a de Polignac number, because 51198115 - 2⁷ = 51197987 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39264 + ... + 40546.

It is an arithmetic number, because the mean of its divisors is an integer number (4021488).

Almost surely, 2^51198115 is an apocalyptic number.

51198115 is a deficient number, since it is larger than the sum of its proper divisors (13145693).

51198115 is a wasteful number, since it uses less digits than its factorization.

51198115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658.

The product of its digits is 1800, while the sum is 31.

The square root of 51198115 is about 7155.2858084077. The cubic root of 51198115 is about 371.3225496566.

The spelling of 51198115 in words is "fifty-one million, one hundred ninety-eight thousand, one hundred fifteen".