55158245 has 8 divisors (see below), whose sum is σ = 66257016. Its totient is φ = 44081856.

The previous prime is 55158239. The next prime is 55158247. The reversal of 55158245 is 54285155.

It can be written as a sum of positive squares in 4 ways, for example, as 20666116 + 34492129 = 4546^2 + 5873^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55158245 - 2¹⁴ = 55141861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55158247) 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, 419 + ... + 10511.

It is an arithmetic number, because the mean of its divisors is an integer number (8282127).

Almost surely, 2^55158245 is an apocalyptic number.

It is an amenable number.

55158245 is a deficient number, since it is larger than the sum of its proper divisors (11098771).

55158245 is a wasteful number, since it uses less digits than its factorization.

55158245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11191.

The product of its digits is 40000, while the sum is 35.

The square root of 55158245 is about 7426.8596997654. The cubic root of 55158245 is about 380.6596230289.

The spelling of 55158245 in words is "fifty-five million, one hundred fifty-eight thousand, two hundred forty-five".