47442565 has 4 divisors (see below), whose sum is σ = 56931084. Its totient is φ = 37954048.

The previous prime is 47442559. The next prime is 47442587. The reversal of 47442565 is 56524474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56524474 = 2 ⋅28262237.

It can be written as a sum of positive squares in 2 ways, for example, as 31832164 + 15610401 = 5642^2 + 3951^2 .

It is a cyclic number.

It is not a de Polignac number, because 47442565 - 2³ = 47442557 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 4744252 + ... + 4744261.

It is an arithmetic number, because the mean of its divisors is an integer number (14232771).

Almost surely, 2^47442565 is an apocalyptic number.

It is an amenable number.

47442565 is a deficient number, since it is larger than the sum of its proper divisors (9488519).

47442565 is an equidigital number, since it uses as much as digits as its factorization.

47442565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9488518.

The product of its digits is 134400, while the sum is 37.

The square root of 47442565 is about 6887.8563428689. The cubic root of 47442565 is about 362.0117946362.

The spelling of 47442565 in words is "forty-seven million, four hundred forty-two thousand, five hundred sixty-five".