50161690 has 16 divisors (see below), whose sum is σ = 92212992. Its totient is φ = 19637584.

The previous prime is 50161681. The next prime is 50161711. The reversal of 50161690 is 9616105.

It is a super-2 number, since 2×50161690² = 5032390287312200, which contains 22 as substring.

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

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, 52894 + ... + 53833.

It is an arithmetic number, because the mean of its divisors is an integer number (5763312).

Almost surely, 2^50161690 is an apocalyptic number.

50161690 is a deficient number, since it is larger than the sum of its proper divisors (42051302).

50161690 is a wasteful number, since it uses less digits than its factorization.

50161690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106781.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 50161690 is about 7082.4917931474. The cubic root of 50161690 is about 368.7998366043.

Adding to 50161690 its reverse (9616105), we get a palindrome (59777795).

The spelling of 50161690 in words is "fifty million, one hundred sixty-one thousand, six hundred ninety".