47122477 has 4 divisors (see below), whose sum is σ = 48747420. Its totient is φ = 45497536.

The previous prime is 47122447. The next prime is 47122501. The reversal of 47122477 is 77422174.

It is a happy number.

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 27311076 + 19811401 = 5226^2 + 4451^2 .

It is a cyclic number.

It is not a de Polignac number, because 47122477 - 2²³ = 38733869 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 (47122417) 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, 812428 + ... + 812485.

It is an arithmetic number, because the mean of its divisors is an integer number (12186855).

Almost surely, 2^47122477 is an apocalyptic number.

It is an amenable number.

47122477 is a deficient number, since it is larger than the sum of its proper divisors (1624943).

47122477 is a wasteful number, since it uses less digits than its factorization.

47122477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624942.

The product of its digits is 21952, while the sum is 34.

The square root of 47122477 is about 6864.5813419319. The cubic root of 47122477 is about 361.1958100091.

The spelling of 47122477 in words is "forty-seven million, one hundred twenty-two thousand, four hundred seventy-seven".