55354257 has 24 divisors (see below), whose sum is σ = 93852096. Its totient is φ = 30774816.

The previous prime is 55354253. The next prime is 55354279. The reversal of 55354257 is 75245355.

55354257 is a `hidden beast` number, since 55 + 354 + 257 = 666.

It is not a de Polignac number, because 55354257 - 2² = 55354253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55354253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9543 + ... + 14204.

It is an arithmetic number, because the mean of its divisors is an integer number (3910504).

Almost surely, 2^55354257 is an apocalyptic number.

It is an amenable number.

55354257 is a deficient number, since it is larger than the sum of its proper divisors (38497839).

55354257 is a wasteful number, since it uses less digits than its factorization.

55354257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23797 (or 23794 counting only the distinct ones).

The product of its digits is 105000, while the sum is 36.

The square root of 55354257 is about 7440.0441530948. The cubic root of 55354257 is about 381.1099977931.

It can be divided in two parts, 55354 and 257, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 55354257 in words is "fifty-five million, three hundred fifty-four thousand, two hundred fifty-seven".