51940430 has 16 divisors (see below), whose sum is σ = 94018320. Its totient is φ = 20659392.

The previous prime is 51940387. The next prime is 51940451. The reversal of 51940430 is 3404915.

It is a self number, because there is not a number n which added to its sum of digits gives 51940430.

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 7 ways as a sum of consecutive naturals, for example, 12719 + ... + 16298.

It is an arithmetic number, because the mean of its divisors is an integer number (5876145).

Almost surely, 2^51940430 is an apocalyptic number.

51940430 is a deficient number, since it is larger than the sum of its proper divisors (42077890).

51940430 is a wasteful number, since it uses less digits than its factorization.

51940430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29203.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 51940430 is about 7206.9709309806. The cubic root of 51940430 is about 373.1085319328.

The spelling of 51940430 in words is "fifty-one million, nine hundred forty thousand, four hundred thirty".