55250491 has 8 divisors (see below), whose sum is σ = 56522160. Its totient is φ = 53990112.

The previous prime is 55250473. The next prime is 55250497. The reversal of 55250491 is 19405255.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55250491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55250497) 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, 7501 + ... + 12913.

It is an arithmetic number, because the mean of its divisors is an integer number (7065270).

Almost surely, 2^55250491 is an apocalyptic number.

55250491 is a deficient number, since it is larger than the sum of its proper divisors (1271669).

55250491 is a wasteful number, since it uses less digits than its factorization.

55250491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5645.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 55250491 is about 7433.0674018201. The cubic root of 55250491 is about 380.8717084014.

The spelling of 55250491 in words is "fifty-five million, two hundred fifty thousand, four hundred ninety-one".