54215123 has 4 divisors (see below), whose sum is σ = 56084640. Its totient is φ = 52345608.

The previous prime is 54215099. The next prime is 54215137. The reversal of 54215123 is 32151245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54215123 - 2¹⁸ = 53952979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54215423) 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, 934715 + ... + 934772.

It is an arithmetic number, because the mean of its divisors is an integer number (14021160).

Almost surely, 2^54215123 is an apocalyptic number.

54215123 is a deficient number, since it is larger than the sum of its proper divisors (1869517).

54215123 is a wasteful number, since it uses less digits than its factorization.

54215123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869516.

The product of its digits is 1200, while the sum is 23.

The square root of 54215123 is about 7363.0919456435. The cubic root of 54215123 is about 378.4775721421.

Adding to 54215123 its reverse (32151245), we get a palindrome (86366368).

The spelling of 54215123 in words is "fifty-four million, two hundred fifteen thousand, one hundred twenty-three".