47311877 has 4 divisors (see below), whose sum is σ = 47482956. Its totient is φ = 47140800.

The previous prime is 47311871. The next prime is 47311883. The reversal of 47311877 is 77811374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77811374 = 2 ⋅38905687.

It is an interprime number because it is at equal distance from previous prime (47311871) and next prime (47311883).

It can be written as a sum of positive squares in 2 ways, for example, as 22221796 + 25090081 = 4714^2 + 5009^2 .

It is a cyclic number.

It is not a de Polignac number, because 47311877 - 2⁴ = 47311861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47311877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47311871) 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, 85124 + ... + 85677.

It is an arithmetic number, because the mean of its divisors is an integer number (11870739).

Almost surely, 2^47311877 is an apocalyptic number.

It is an amenable number.

47311877 is a deficient number, since it is larger than the sum of its proper divisors (171079).

47311877 is a wasteful number, since it uses less digits than its factorization.

47311877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171078.

The product of its digits is 32928, while the sum is 38.

The square root of 47311877 is about 6878.3629593094. The cubic root of 47311877 is about 361.6790828227.

The spelling of 47311877 in words is "forty-seven million, three hundred eleven thousand, eight hundred seventy-seven".