51400608 has 120 divisors (see below), whose sum is σ = 158110848. Its totient is φ = 14620032.

The previous prime is 51400579. The next prime is 51400621. The reversal of 51400608 is 80600415.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 230385 + ... + 230607.

Almost surely, 2^51400608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51400608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79055424).

51400608 is an abundant number, since it is smaller than the sum of its proper divisors (106710240).

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

51400608 is an equidigital number, since it uses as much as digits as its factorization.

51400608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 51400608 is about 7169.4217340034. The cubic root of 51400608 is about 371.8114433482.

The spelling of 51400608 in words is "fifty-one million, four hundred thousand, six hundred eight".