51478790 has 32 divisors (see below), whose sum is σ = 106410240. Its totient is φ = 17733600.

The previous prime is 51478781. The next prime is 51478837. The reversal of 51478790 is 9787415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10226 + ... + 14405.

It is an arithmetic number, because the mean of its divisors is an integer number (3325320).

Almost surely, 2^51478790 is an apocalyptic number.

51478790 is an abundant number, since it is smaller than the sum of its proper divisors (54931450).

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

51478790 is a wasteful number, since it uses less digits than its factorization.

51478790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24668.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 51478790 is about 7174.8721242960. The cubic root of 51478790 is about 371.9998602921. Note that the first 3 decimals are identical.

The spelling of 51478790 in words is "fifty-one million, four hundred seventy-eight thousand, seven hundred ninety".