51942558 has 32 divisors (see below), whose sum is σ = 105469056. Its totient is φ = 17052768.

The previous prime is 51942557. The next prime is 51942601. The reversal of 51942558 is 85524915.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51942551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169041 + ... + 169347.

It is an arithmetic number, because the mean of its divisors is an integer number (3295908).

Almost surely, 2^51942558 is an apocalyptic number.

51942558 is an abundant number, since it is smaller than the sum of its proper divisors (53526498).

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

51942558 is a wasteful number, since it uses less digits than its factorization.

51942558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648.

The product of its digits is 72000, while the sum is 39.

The square root of 51942558 is about 7207.1185643085. The cubic root of 51942558 is about 373.1136272834.

The spelling of 51942558 in words is "fifty-one million, nine hundred forty-two thousand, five hundred fifty-eight".