55002557 has 8 divisors (see below), whose sum is σ = 55796736. Its totient is φ = 54214272.

The previous prime is 55002553. The next prime is 55002581. The reversal of 55002557 is 75520055.

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 55002557 - 2² = 55002553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55002553) 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, 19373 + ... + 22029.

It is an arithmetic number, because the mean of its divisors is an integer number (6974592).

Almost surely, 2^55002557 is an apocalyptic number.

It is an amenable number.

55002557 is a deficient number, since it is larger than the sum of its proper divisors (794179).

55002557 is a wasteful number, since it uses less digits than its factorization.

55002557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947.

The product of its (nonzero) digits is 8750, while the sum is 29.

The square root of 55002557 is about 7416.3708779969. The cubic root of 55002557 is about 380.3011394087.

The spelling of 55002557 in words is "fifty-five million, two thousand, five hundred fifty-seven".