55193745 has 32 divisors (see below), whose sum is σ = 91422720. Its totient is φ = 28416960.

The previous prime is 55193741. The next prime is 55193753. The reversal of 55193745 is 54739155.

It is not a de Polignac number, because 55193745 - 2² = 55193741 is a prime.

Its product of digits (94500) is a multiple of the sum of its prime divisors (1125).

It is not an unprimeable number, because it can be changed into a prime (55193741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55200 + ... + 56190.

It is an arithmetic number, because the mean of its divisors is an integer number (2856960).

Almost surely, 2^55193745 is an apocalyptic number.

It is an amenable number.

55193745 is a deficient number, since it is larger than the sum of its proper divisors (36228975).

55193745 is a wasteful number, since it uses less digits than its factorization.

55193745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125.

The product of its digits is 94500, while the sum is 39.

The square root of 55193745 is about 7429.2492891274. The cubic root of 55193745 is about 380.7412700462.

The spelling of 55193745 in words is "fifty-five million, one hundred ninety-three thousand, seven hundred forty-five".