47549797 has 4 divisors (see below), whose sum is σ = 47627980. Its totient is φ = 47471616.

The previous prime is 47549737. The next prime is 47549807. The reversal of 47549797 is 79794574.

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 7214596 + 40335201 = 2686^2 + 6351^2 .

It is a cyclic number.

It is not a de Polignac number, because 47549797 - 2⁷ = 47549669 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 (47549707) 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, 38172 + ... + 39397.

It is an arithmetic number, because the mean of its divisors is an integer number (11906995).

Almost surely, 2^47549797 is an apocalyptic number.

It is an amenable number.

47549797 is a deficient number, since it is larger than the sum of its proper divisors (78183).

47549797 is an equidigital number, since it uses as much as digits as its factorization.

47549797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78182.

The product of its digits is 2222640, while the sum is 52.

The square root of 47549797 is about 6895.6360837852. The cubic root of 47549797 is about 362.2843349762.

The spelling of 47549797 in words is "forty-seven million, five hundred forty-nine thousand, seven hundred ninety-seven".