51258394 has 16 divisors (see below), whose sum is σ = 86145696. Its totient is φ = 22669200.

The previous prime is 51258373. The next prime is 51258397. The reversal of 51258394 is 49385215.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (51258397) 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, 30672 + ... + 32299.

It is an arithmetic number, because the mean of its divisors is an integer number (5384106).

Almost surely, 2^51258394 is an apocalyptic number.

51258394 is a deficient number, since it is larger than the sum of its proper divisors (34887302).

51258394 is a wasteful number, since it uses less digits than its factorization.

51258394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63021.

The product of its digits is 43200, while the sum is 37.

The square root of 51258394 is about 7159.4967700251. The cubic root of 51258394 is about 371.4682202110.

The spelling of 51258394 in words is "fifty-one million, two hundred fifty-eight thousand, three hundred ninety-four".