47521505 has 8 divisors (see below), whose sum is σ = 58567272. Its totient is φ = 36989568.

The previous prime is 47521499. The next prime is 47521541. The reversal of 47521505 is 50512574.

It can be written as a sum of positive squares in 4 ways, for example, as 9193024 + 38328481 = 3032^2 + 6191^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 47521505 - 2¹² = 47517409 is a prime.

It is a Duffinian number.

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, 128252 + ... + 128621.

It is an arithmetic number, because the mean of its divisors is an integer number (7320909).

Almost surely, 2^47521505 is an apocalyptic number.

It is an amenable number.

47521505 is a deficient number, since it is larger than the sum of its proper divisors (11045767).

47521505 is a wasteful number, since it uses less digits than its factorization.

47521505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256915.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 47521505 is about 6893.5843361781. The cubic root of 47521505 is about 362.2124679891.

The spelling of 47521505 in words is "forty-seven million, five hundred twenty-one thousand, five hundred five".