55025407 has 8 divisors (see below), whose sum is σ = 58065120. Its totient is φ = 52039680.

The previous prime is 55025393. The next prime is 55025419. The reversal of 55025407 is 70452055.

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-55025407 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55025437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11394 + ... + 15487.

It is an arithmetic number, because the mean of its divisors is an integer number (7258140).

Almost surely, 2^55025407 is an apocalyptic number.

55025407 is a deficient number, since it is larger than the sum of its proper divisors (3039713).

55025407 is a wasteful number, since it uses less digits than its factorization.

55025407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26993.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 55025407 is about 7417.9112289107. The cubic root of 55025407 is about 380.3537956149.

The spelling of 55025407 in words is "fifty-five million, twenty-five thousand, four hundred seven".