51918370 has 16 divisors (see below), whose sum is σ = 106803648. Its totient is φ = 17800560.

The previous prime is 51918359. The next prime is 51918371. The reversal of 51918370 is 7381915.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51918371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370776 + ... + 370915.

It is an arithmetic number, because the mean of its divisors is an integer number (6675228).

Almost surely, 2^51918370 is an apocalyptic number.

51918370 is an abundant number, since it is smaller than the sum of its proper divisors (54885278).

51918370 is a wasteful number, since it uses less digits than its factorization.

51918370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741705.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 51918370 is about 7205.4403057690. The cubic root of 51918370 is about 373.0557025682.

The spelling of 51918370 in words is "fifty-one million, nine hundred eighteen thousand, three hundred seventy".