47761521 has 16 divisors (see below), whose sum is σ = 66182400. Its totient is φ = 30601088.

The previous prime is 47761513. The next prime is 47761523. The reversal of 47761521 is 12516774.

It is a cyclic number.

It is not a de Polignac number, because 47761521 - 2³ = 47761513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47761523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19645 + ... + 21941.

It is an arithmetic number, because the mean of its divisors is an integer number (4136400).

Almost surely, 2^47761521 is an apocalyptic number.

It is an amenable number.

47761521 is a deficient number, since it is larger than the sum of its proper divisors (18420879).

47761521 is a wasteful number, since it uses less digits than its factorization.

47761521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568.

The product of its digits is 11760, while the sum is 33.

The square root of 47761521 is about 6910.9710605674. The cubic root of 47761521 is about 362.8212508526.

The spelling of 47761521 in words is "forty-seven million, seven hundred sixty-one thousand, five hundred twenty-one".