47621545 has 4 divisors (see below), whose sum is σ = 57145860. Its totient is φ = 38097232.

The previous prime is 47621521. The next prime is 47621551. The reversal of 47621545 is 54512674.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31404816 + 16216729 = 5604^2 + 4027^2 .

It is a cyclic number.

It is not a de Polignac number, because 47621545 - 2¹⁵ = 47588777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47621545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4762150 + ... + 4762159.

It is an arithmetic number, because the mean of its divisors is an integer number (14286465).

Almost surely, 2^47621545 is an apocalyptic number.

It is an amenable number.

47621545 is a deficient number, since it is larger than the sum of its proper divisors (9524315).

47621545 is an equidigital number, since it uses as much as digits as its factorization.

47621545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9524314.

The product of its digits is 33600, while the sum is 34.

The square root of 47621545 is about 6900.8365434924. The cubic root of 47621545 is about 362.4664606306.

The spelling of 47621545 in words is "forty-seven million, six hundred twenty-one thousand, five hundred forty-five".