51199395 has 48 divisors (see below), whose sum is σ = 93461760. Its totient is φ = 23856768.

The previous prime is 51199373. The next prime is 51199397. The reversal of 51199395 is 59399115.

It is not a de Polignac number, because 51199395 - 2⁵ = 51199363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51199397) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47634 + ... + 48696.

It is an arithmetic number, because the mean of its divisors is an integer number (1947120).

Almost surely, 2^51199395 is an apocalyptic number.

51199395 is a deficient number, since it is larger than the sum of its proper divisors (42262365).

51199395 is a wasteful number, since it uses less digits than its factorization.

51199395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116 (or 1103 counting only the distinct ones).

The product of its digits is 54675, while the sum is 42.

The square root of 51199395 is about 7155.3752522142. The cubic root of 51199395 is about 371.3256440993.

The spelling of 51199395 in words is "fifty-one million, one hundred ninety-nine thousand, three hundred ninety-five".