55502551 has 8 divisors (see below), whose sum is σ = 61162640. Its totient is φ = 50041152.

The previous prime is 55502533. The next prime is 55502563. The reversal of 55502551 is 15520555.

It is a happy number.

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 55502551 - 2⁷ = 55502423 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 (55502851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49086 + ... + 50203.

It is an arithmetic number, because the mean of its divisors is an integer number (7645330).

Almost surely, 2^55502551 is an apocalyptic number.

55502551 is a deficient number, since it is larger than the sum of its proper divisors (5660089).

55502551 is a wasteful number, since it uses less digits than its factorization.

55502551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99345.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 55502551 is about 7450.0034228180. The cubic root of 55502551 is about 381.4500254320.

The spelling of 55502551 in words is "fifty-five million, five hundred two thousand, five hundred fifty-one".