47155479 has 16 divisors (see below), whose sum is σ = 74334720. Its totient is φ = 26016480.

The previous prime is 47155469. The next prime is 47155489. The reversal of 47155479 is 97455174.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (47155469) and next prime (47155489).

It is not a de Polignac number, because 47155479 - 2⁵ = 47155447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47155479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47155439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38107 + ... + 39324.

It is an arithmetic number, because the mean of its divisors is an integer number (4645920).

Almost surely, 2^47155479 is an apocalyptic number.

47155479 is a deficient number, since it is larger than the sum of its proper divisors (27179241).

47155479 is a wasteful number, since it uses less digits than its factorization.

47155479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77470.

The product of its digits is 176400, while the sum is 42.

The square root of 47155479 is about 6866.9847094631. The cubic root of 47155479 is about 361.2801109147.

The spelling of 47155479 in words is "forty-seven million, one hundred fifty-five thousand, four hundred seventy-nine".