55825091 has 4 divisors (see below), whose sum is σ = 63800112. Its totient is φ = 47850072.

The previous prime is 55825069. The next prime is 55825103. The reversal of 55825091 is 19052855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55825091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55825031) 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, 3987500 + ... + 3987513.

It is an arithmetic number, because the mean of its divisors is an integer number (15950028).

Almost surely, 2^55825091 is an apocalyptic number.

55825091 is a deficient number, since it is larger than the sum of its proper divisors (7975021).

55825091 is an equidigital number, since it uses as much as digits as its factorization.

55825091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7975020.

The product of its (nonzero) digits is 18000, while the sum is 35.

The square root of 55825091 is about 7471.6190347207. The cubic root of 55825091 is about 382.1875010368.

The spelling of 55825091 in words is "fifty-five million, eight hundred twenty-five thousand, ninety-one".