8557156455 has 32 divisors (see below), whose sum is σ = 14241097728. Its totient is φ = 4382851200.

The previous prime is 8557156441. The next prime is 8557156457. The reversal of 8557156455 is 5546517558.

It is a happy number.

8557156455 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8557156455 - 2²³ = 8548767847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8557156398 and 8557156407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8557156457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9324 + ... + 131153.

It is an arithmetic number, because the mean of its divisors is an integer number (445034304).

Almost surely, 2^8557156455 is an apocalyptic number.

8557156455 is a deficient number, since it is larger than the sum of its proper divisors (5683941273).

8557156455 is a wasteful number, since it uses less digits than its factorization.

8557156455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140647.

The product of its digits is 4200000, while the sum is 51.

The square root of 8557156455 is about 92504.8996269927. The cubic root of 8557156455 is about 2045.3917072566.

The spelling of 8557156455 in words is "eight billion, five hundred fifty-seven million, one hundred fifty-six thousand, four hundred fifty-five".