51521195 has 12 divisors (see below), whose sum is σ = 67957680. Its totient is φ = 37469520.

The previous prime is 51521189. The next prime is 51521201. The reversal of 51521195 is 59112515.

It is an interprime number because it is at equal distance from previous prime (51521189) and next prime (51521201).

It is not a de Polignac number, because 51521195 - 2⁸ = 51520939 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41975 + ... + 43184.

It is an arithmetic number, because the mean of its divisors is an integer number (5663140).

Almost surely, 2^51521195 is an apocalyptic number.

51521195 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51521195 is a deficient number, since it is larger than the sum of its proper divisors (16436485).

51521195 is a wasteful number, since it uses less digits than its factorization.

51521195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85186 (or 85175 counting only the distinct ones).

The product of its digits is 2250, while the sum is 29.

The square root of 51521195 is about 7177.8266209208. The cubic root of 51521195 is about 372.1019756466.

The spelling of 51521195 in words is "fifty-one million, five hundred twenty-one thousand, one hundred ninety-five".