50745690 has 56 divisors (see below), whose sum is σ = 136970388. Its totient is φ = 13530240.

The previous prime is 50745689. The next prime is 50745691. The reversal of 50745690 is 9654705.

It is an interprime number because it is at equal distance from previous prime (50745689) and next prime (50745691).

It can be written as a sum of positive squares in 2 ways, for example, as 50424201 + 321489 = 7101^2 + 567^2 .

It is a super-2 number, since 2×50745690² = 5150250107152200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50745691) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 3810 + ... + 10770.

Almost surely, 2^50745690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50745690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68485194).

50745690 is an abundant number, since it is smaller than the sum of its proper divisors (86224698).

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

50745690 is an equidigital number, since it uses as much as digits as its factorization.

50745690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6986 (or 6971 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 50745690 is about 7123.6009152675. The cubic root of 50745690 is about 370.2255503276.

The spelling of 50745690 in words is "fifty million, seven hundred forty-five thousand, six hundred ninety".