47745745 has 8 divisors (see below), whose sum is σ = 59270760. Its totient is φ = 36879360.

The previous prime is 47745683. The next prime is 47745767. The reversal of 47745745 is 54754774.

It can be written as a sum of positive squares in 4 ways, for example, as 25281 + 47720464 = 159^2 + 6908^2 .

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

It is not a de Polignac number, because 47745745 - 2²³ = 39357137 is a prime.

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, 164496 + ... + 164785.

It is an arithmetic number, because the mean of its divisors is an integer number (7408845).

Almost surely, 2^47745745 is an apocalyptic number.

It is an amenable number.

47745745 is a deficient number, since it is larger than the sum of its proper divisors (11525015).

47745745 is a wasteful number, since it uses less digits than its factorization.

47745745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329315.

The product of its digits is 548800, while the sum is 43.

The square root of 47745745 is about 6909.8295926890. The cubic root of 47745745 is about 362.7812988978.

The spelling of 47745745 in words is "forty-seven million, seven hundred forty-five thousand, seven hundred forty-five".