47561477 has 4 divisors (see below), whose sum is σ = 47575500. Its totient is φ = 47547456.

The previous prime is 47561473. The next prime is 47561489. The reversal of 47561477 is 77416574.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 14945956 + 32615521 = 3866^2 + 5711^2 .

It is a cyclic number.

It is not a de Polignac number, because 47561477 - 2² = 47561473 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 (47561473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613 + ... + 9885.

It is an arithmetic number, because the mean of its divisors is an integer number (11893875).

Almost surely, 2^47561477 is an apocalyptic number.

It is an amenable number.

47561477 is a deficient number, since it is larger than the sum of its proper divisors (14023).

47561477 is an equidigital number, since it uses as much as digits as its factorization.

47561477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14022.

The product of its digits is 164640, while the sum is 41.

The square root of 47561477 is about 6896.4829442260. The cubic root of 47561477 is about 362.3139960534.

The spelling of 47561477 in words is "forty-seven million, five hundred sixty-one thousand, four hundred seventy-seven".