50390402 has 8 divisors (see below), whose sum is σ = 76023036. Its totient is φ = 25049392.

The previous prime is 50390399. The next prime is 50390423. The reversal of 50390402 is 20409305.

It can be written as a sum of positive squares in 2 ways, for example, as 48455521 + 1934881 = 6961^2 + 1391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×50390402² = 5078385227443208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72473 + ... + 73164.

Almost surely, 2^50390402 is an apocalyptic number.

50390402 is a deficient number, since it is larger than the sum of its proper divisors (25632634).

50390402 is a wasteful number, since it uses less digits than its factorization.

50390402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145812.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 50390402 is about 7098.6197249888. The cubic root of 50390402 is about 369.3595006013.

Adding to 50390402 its reverse (20409305), we get a palindrome (70799707).

The spelling of 50390402 in words is "fifty million, three hundred ninety thousand, four hundred two".