50291990 has 16 divisors (see below), whose sum is σ = 103457952. Its totient is φ = 17242944.

The previous prime is 50291987. The next prime is 50292017. The reversal of 50291990 is 9919205.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 50291990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359159 + ... + 359298.

It is an arithmetic number, because the mean of its divisors is an integer number (6466122).

Almost surely, 2^50291990 is an apocalyptic number.

50291990 is an abundant number, since it is smaller than the sum of its proper divisors (53165962).

50291990 is a wasteful number, since it uses less digits than its factorization.

50291990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718471.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 50291990 is about 7091.6845671533. The cubic root of 50291990 is about 369.1188919748.

The spelling of 50291990 in words is "fifty million, two hundred ninety-one thousand, nine hundred ninety".