51913458 has 12 divisors (see below), whose sum is σ = 112479198. Its totient is φ = 17304480.

The previous prime is 51913457. The next prime is 51913469. The reversal of 51913458 is 85431915.

51913458 is a `hidden beast` number, since 519 + 134 + 5 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38975049 + 12938409 = 6243^2 + 3597^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51913457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1442023 + ... + 1442058.

Almost surely, 2^51913458 is an apocalyptic number.

51913458 is an abundant number, since it is smaller than the sum of its proper divisors (60565740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51913458 is a wasteful number, since it uses less digits than its factorization.

51913458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884089 (or 2884086 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 51913458 is about 7205.0994441437. The cubic root of 51913458 is about 373.0439372566.

It can be divided in two parts, 5191 and 3458, that added together give a square (8649 = 93²).

The spelling of 51913458 in words is "fifty-one million, nine hundred thirteen thousand, four hundred fifty-eight".