6557403551 has 8 divisors (see below), whose sum is σ = 6891251664. Its totient is φ = 6231798720.

The previous prime is 6557403521. The next prime is 6557403607. The reversal of 6557403551 is 1553047556.

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 6557403551 - 2¹⁴ = 6557387167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6557403499 and 6557403508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6557403521) 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, 2059190 + ... + 2062371.

It is an arithmetic number, because the mean of its divisors is an integer number (861406458).

Almost surely, 2^6557403551 is an apocalyptic number.

6557403551 is a deficient number, since it is larger than the sum of its proper divisors (333848113).

6557403551 is a wasteful number, since it uses less digits than its factorization.

6557403551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121641.

The product of its (nonzero) digits is 315000, while the sum is 41.

The square root of 6557403551 is about 80977.7966543916. The cubic root of 6557403551 is about 1871.7333153373.

The spelling of 6557403551 in words is "six billion, five hundred fifty-seven million, four hundred three thousand, five hundred fifty-one".