51958386 has 24 divisors (see below), whose sum is σ = 113337900. Its totient is φ = 17202336.

The previous prime is 51958381. The next prime is 51958411. The reversal of 51958386 is 68385915.

51958386 is a `hidden beast` number, since 519 + 58 + 3 + 86 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46580625 + 5377761 = 6825^2 + 2319^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51958381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7005 + ... + 12368.

Almost surely, 2^51958386 is an apocalyptic number.

51958386 is an abundant number, since it is smaller than the sum of its proper divisors (61379514).

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

51958386 is a wasteful number, since it uses less digits than its factorization.

51958386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19530 (or 19527 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 51958386 is about 7208.2165616746. The cubic root of 51958386 is about 373.1515219820.

The spelling of 51958386 in words is "fifty-one million, nine hundred fifty-eight thousand, three hundred eighty-six".