2155355457 has 8 divisors (see below), whose sum is σ = 2874022176. Its totient is φ = 1436796192.

The previous prime is 2155355359. The next prime is 2155355473. The reversal of 2155355457 is 7545535512.

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

It is not a de Polignac number, because 2155355457 - 2⁷ = 2155355329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155355057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60978 + ... + 89604.

It is an arithmetic number, because the mean of its divisors is an integer number (359252772).

Almost surely, 2^2155355457 is an apocalyptic number.

It is an amenable number.

2155355457 is a deficient number, since it is larger than the sum of its proper divisors (718666719).

2155355457 is a wasteful number, since it uses less digits than its factorization.

2155355457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53727.

The product of its digits is 525000, while the sum is 42.

The square root of 2155355457 is about 46425.8059380772. The cubic root of 2155355457 is about 1291.7336339076.

The spelling of 2155355457 in words is "two billion, one hundred fifty-five million, three hundred fifty-five thousand, four hundred fifty-seven".