47557489 has 6 divisors (see below), whose sum is σ = 55322034. Its totient is φ = 40763520.

The previous prime is 47557487. The next prime is 47557553. The reversal of 47557489 is 98475574.

It can be written as a sum of positive squares in only one way, i.e., 26471025 + 21086464 = 5145^2 + 4592^2 .

It is not a de Polignac number, because 47557489 - 2¹ = 47557487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 970561 = 47557489 / (4 + 7 + 5 + 5 + 7 + 4 + 8 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47557487) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 485232 + ... + 485329.

It is an arithmetic number, because the mean of its divisors is an integer number (9220339).

Almost surely, 2^47557489 is an apocalyptic number.

47557489 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

47557489 is a deficient number, since it is larger than the sum of its proper divisors (7764545).

47557489 is an equidigital number, since it uses as much as digits as its factorization.

47557489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970575 (or 970568 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 49.

The square root of 47557489 is about 6896.1938052813. The cubic root of 47557489 is about 362.3038691700.

The spelling of 47557489 in words is "forty-seven million, five hundred fifty-seven thousand, four hundred eighty-nine".