51428958 has 32 divisors (see below), whose sum is σ = 118976256. Its totient is φ = 14515968.

The previous prime is 51428911. The next prime is 51428959. The reversal of 51428958 is 85982415.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51428959) 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, 3891 + ... + 10862.

It is an arithmetic number, because the mean of its divisors is an integer number (3718008).

Almost surely, 2^51428958 is an apocalyptic number.

51428958 is an abundant number, since it is smaller than the sum of its proper divisors (67547298).

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

51428958 is a wasteful number, since it uses less digits than its factorization.

51428958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14848.

The product of its digits is 115200, while the sum is 42.

The square root of 51428958 is about 7171.3986083609. The cubic root of 51428958 is about 371.8797883055.

The spelling of 51428958 in words is "fifty-one million, four hundred twenty-eight thousand, nine hundred fifty-eight".