50971690 has 64 divisors (see below), whose sum is σ = 116640000. Its totient is φ = 15575040.

The previous prime is 50971667. The next prime is 50971691. The reversal of 50971690 is 9617905.

50971690 = T₄₈₃ + T₄₈₄ + ... + T₇₄₇.

It is a super-2 number, since 2×50971690² = 5196226362912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50971691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40186 + ... + 41434.

It is an arithmetic number, because the mean of its divisors is an integer number (1822500).

Almost surely, 2^50971690 is an apocalyptic number.

50971690 is an abundant number, since it is smaller than the sum of its proper divisors (65668310).

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

50971690 is a wasteful number, since it uses less digits than its factorization.

50971690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 50971690 is about 7139.4460569431. The cubic root of 50971690 is about 370.7743461563.

The spelling of 50971690 in words is "fifty million, nine hundred seventy-one thousand, six hundred ninety".