55890551 has 8 divisors (see below), whose sum is σ = 57940608. Its totient is φ = 53856000.

The previous prime is 55890547. The next prime is 55890553. The reversal of 55890551 is 15509855.

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 55890551 - 2² = 55890547 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 (55890553) 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, 3731 + ... + 11211.

It is an arithmetic number, because the mean of its divisors is an integer number (7242576).

Almost surely, 2^55890551 is an apocalyptic number.

55890551 is a deficient number, since it is larger than the sum of its proper divisors (2050057).

55890551 is a wasteful number, since it uses less digits than its factorization.

55890551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7753.

The product of its (nonzero) digits is 45000, while the sum is 38.

The square root of 55890551 is about 7475.9983279827. The cubic root of 55890551 is about 382.3368258960.

The spelling of 55890551 in words is "fifty-five million, eight hundred ninety thousand, five hundred fifty-one".