50400504 has 96 divisors (see below), whose sum is σ = 170202240. Its totient is φ = 13089600.

The previous prime is 50400491. The next prime is 50400517. The reversal of 50400504 is 40500405.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (50400491) and next prime (50400517).

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 999 + ... + 10089.

It is an arithmetic number, because the mean of its divisors is an integer number (1772940).

Almost surely, 2^50400504 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 50400504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85101120).

50400504 is an abundant number, since it is smaller than the sum of its proper divisors (119801736).

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

50400504 is a wasteful number, since it uses less digits than its factorization.

50400504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9121 (or 9114 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 50400504 is about 7099.3312361095. The cubic root of 50400504 is about 369.3841813620.

Adding to 50400504 its reverse (40500405), we get a palindrome (90900909).

Subtracting from 50400504 its reverse (40500405), we obtain a palindrome (9900099).

It can be divided in two parts, 50400 and 504, that multiplied together give a square (25401600 = 5040²).

The spelling of 50400504 in words is "fifty million, four hundred thousand, five hundred four".