47542477 has 4 divisors (see below), whose sum is σ = 48648160. Its totient is φ = 46436796.

The previous prime is 47542471. The next prime is 47542487. The reversal of 47542477 is 77424574.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77424574 = 2 ⋅38712287.

It is a cyclic number.

It is not a de Polignac number, because 47542477 - 2¹¹ = 47540429 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 (47542471) 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, 552777 + ... + 552862.

It is an arithmetic number, because the mean of its divisors is an integer number (12162040).

Almost surely, 2^47542477 is an apocalyptic number.

It is an amenable number.

47542477 is a deficient number, since it is larger than the sum of its proper divisors (1105683).

47542477 is a wasteful number, since it uses less digits than its factorization.

47542477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105682.

The product of its digits is 219520, while the sum is 40.

The square root of 47542477 is about 6895.1052928871. The cubic root of 47542477 is about 362.2657435373.

The spelling of 47542477 in words is "forty-seven million, five hundred forty-two thousand, four hundred seventy-seven".