50970990 has 128 divisors (see below), whose sum is σ = 149133312. Its totient is φ = 10897920.

The previous prime is 50970979. The next prime is 50970991. The reversal of 50970990 is 9907905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50970991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 294544 + ... + 294716.

It is an arithmetic number, because the mean of its divisors is an integer number (1165104).

Almost surely, 2^50970990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50970990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74566656).

50970990 is an abundant number, since it is smaller than the sum of its proper divisors (98162322).

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

50970990 is a wasteful number, since it uses less digits than its factorization.

50970990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274.

The product of its (nonzero) digits is 25515, while the sum is 39.

The square root of 50970990 is about 7139.3970333635. The cubic root of 50970990 is about 370.7726488532.

The spelling of 50970990 in words is "fifty million, nine hundred seventy thousand, nine hundred ninety".