50007661 has 8 divisors (see below), whose sum is σ = 55368864. Its totient is φ = 44782320.

The previous prime is 50007653. The next prime is 50007679. The reversal of 50007661 is 16670005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50007661 - 2³ = 50007653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50007611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33190 + ... + 34663.

It is an arithmetic number, because the mean of its divisors is an integer number (6921108).

Almost surely, 2^50007661 is an apocalyptic number.

It is an amenable number.

50007661 is a deficient number, since it is larger than the sum of its proper divisors (5361203).

50007661 is a wasteful number, since it uses less digits than its factorization.

50007661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67931.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 50007661 is about 7071.6095056218. The cubic root of 50007661 is about 368.4219644800.

Adding to 50007661 its reverse (16670005), we get a palindrome (66677666).

The spelling of 50007661 in words is "fifty million, seven thousand, six hundred sixty-one".