55472149 has 4 divisors (see below), whose sum is σ = 55487200. Its totient is φ = 55457100.

The previous prime is 55472143. The next prime is 55472161. The reversal of 55472149 is 94127455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55472149 - 2¹⁵ = 55439381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55472143) 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, 2152 + ... + 10750.

It is an arithmetic number, because the mean of its divisors is an integer number (13871800).

Almost surely, 2^55472149 is an apocalyptic number.

It is an amenable number.

55472149 is a deficient number, since it is larger than the sum of its proper divisors (15051).

55472149 is an equidigital number, since it uses as much as digits as its factorization.

55472149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15050.

The product of its digits is 50400, while the sum is 37.

The square root of 55472149 is about 7447.9627415824. The cubic root of 55472149 is about 381.3803652000.

The spelling of 55472149 in words is "fifty-five million, four hundred seventy-two thousand, one hundred forty-nine".