47145555 has 48 divisors (see below), whose sum is σ = 87409920. Its totient is φ = 23436864.

The previous prime is 47145547. The next prime is 47145583. The reversal of 47145555 is 55554174.

It is not a de Polignac number, because 47145555 - 2³ = 47145547 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56874 + ... + 57696.

It is an arithmetic number, because the mean of its divisors is an integer number (1821040).

Almost surely, 2^47145555 is an apocalyptic number.

47145555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47145555 is a deficient number, since it is larger than the sum of its proper divisors (40264365).

47145555 is a wasteful number, since it uses less digits than its factorization.

47145555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 917 counting only the distinct ones).

The product of its digits is 70000, while the sum is 36.

The square root of 47145555 is about 6866.2620835503. The cubic root of 47145555 is about 361.2547650062.

The spelling of 47145555 in words is "forty-seven million, one hundred forty-five thousand, five hundred fifty-five".