51200406 has 24 divisors (see below), whose sum is σ = 114513984. Its totient is φ = 16516080.

The previous prime is 51200393. The next prime is 51200417. The reversal of 51200406 is 60400215.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45321 + ... + 46436.

It is an arithmetic number, because the mean of its divisors is an integer number (4771416).

Almost surely, 2^51200406 is an apocalyptic number.

51200406 is an abundant number, since it is smaller than the sum of its proper divisors (63313578).

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

51200406 is a wasteful number, since it uses less digits than its factorization.

51200406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91796 (or 91793 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 51200406 is about 7155.4458980556. The cubic root of 51200406 is about 371.3280881891.

The spelling of 51200406 in words is "fifty-one million, two hundred thousand, four hundred six".