55321245 has 48 divisors (see below), whose sum is σ = 114419520. Its totient is φ = 25286688.

The previous prime is 55321223. The next prime is 55321271. The reversal of 55321245 is 54212355.

It is a happy number.

55321245 is a `hidden beast` number, since 5 + 532 + 124 + 5 = 666.

It is not a de Polignac number, because 55321245 - 2⁶ = 55321181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 2434 + ... + 10796.

It is an arithmetic number, because the mean of its divisors is an integer number (2383740).

Almost surely, 2^55321245 is an apocalyptic number.

It is an amenable number.

55321245 is an abundant number, since it is smaller than the sum of its proper divisors (59098275).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55321245 is a wasteful number, since it uses less digits than its factorization.

55321245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8391 (or 8378 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 55321245 is about 7437.8252870043. The cubic root of 55321245 is about 381.0342209947.

The spelling of 55321245 in words is "fifty-five million, three hundred twenty-one thousand, two hundred forty-five".