50015661 has 16 divisors (see below), whose sum is σ = 68448000. Its totient is φ = 32470848.

The previous prime is 50015659. The next prime is 50015663. The reversal of 50015661 is 16651005.

It is an interprime number because it is at equal distance from previous prime (50015659) and next prime (50015663).

It is not a de Polignac number, because 50015661 - 2¹ = 50015659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50015663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31515 + ... + 33063.

It is an arithmetic number, because the mean of its divisors is an integer number (4278000).

Almost surely, 2^50015661 is an apocalyptic number.

It is an amenable number.

50015661 is a deficient number, since it is larger than the sum of its proper divisors (18432339).

50015661 is a wasteful number, since it uses less digits than its factorization.

50015661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 50015661 is about 7072.1751250941. The cubic root of 50015661 is about 368.4416095937.

Adding to 50015661 its reverse (16651005), we get a palindrome (66666666).

It can be divided in two parts, 500 and 15661, that added together give a palindrome (16161).

The spelling of 50015661 in words is "fifty million, fifteen thousand, six hundred sixty-one".