8149557 has 8 divisors (see below), whose sum is σ = 11701984. Its totient is φ = 5015088.

The previous prime is 8149553. The next prime is 8149571. The reversal of 8149557 is 7559418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8149557 - 2² = 8149553 is a prime.

It is a super-3 number, since 3×8149557³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 208963 = 8149557 / (8 + 1 + 4 + 9 + 5 + 5 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8149553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104443 + ... + 104520.

It is an arithmetic number, because the mean of its divisors is an integer number (1462748).

Almost surely, 2^8149557 is an apocalyptic number.

It is an amenable number.

8149557 is a deficient number, since it is larger than the sum of its proper divisors (3552427).

8149557 is a wasteful number, since it uses less digits than its factorization.

8149557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208979.

The product of its digits is 50400, while the sum is 39.

The square root of 8149557 is about 2854.7428956037. The cubic root of 8149557 is about 201.2386215806.

The spelling of 8149557 in words is "eight million, one hundred forty-nine thousand, five hundred fifty-seven".