55152111 has 8 divisors (see below), whose sum is σ = 84041344. Its totient is φ = 31515480.

The previous prime is 55152073. The next prime is 55152133. The reversal of 55152111 is 11125155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55152111 - 2⁶ = 55152047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2626291 = 55152111 / (5 + 5 + 1 + 5 + 2 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55152211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1313125 + ... + 1313166.

It is an arithmetic number, because the mean of its divisors is an integer number (10505168).

Almost surely, 2^55152111 is an apocalyptic number.

55152111 is a deficient number, since it is larger than the sum of its proper divisors (28889233).

55152111 is a wasteful number, since it uses less digits than its factorization.

55152111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626301.

The product of its digits is 250, while the sum is 21.

The square root of 55152111 is about 7426.4467277427. The cubic root of 55152111 is about 380.6455117950.

Adding to 55152111 its reverse (11125155), we get a palindrome (66277266).

It can be divided in two parts, 5515 and 2111, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 55152111 in words is "fifty-five million, one hundred fifty-two thousand, one hundred eleven".