1154057555 has 24 divisors (see below), whose sum is σ = 1615580640. Its totient is φ = 789089280.

The previous prime is 1154057551. The next prime is 1154057573. The reversal of 1154057555 is 5557504511.

It is a happy number.

It is not a de Polignac number, because 1154057555 - 2² = 1154057551 is a prime.

It is a super-3 number, since 3×1154057555³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1154057551) 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 23 ways as a sum of consecutive naturals, for example, 81395 + ... + 94515.

It is an arithmetic number, because the mean of its divisors is an integer number (67315860).

Almost surely, 2^1154057555 is an apocalyptic number.

1154057555 is a deficient number, since it is larger than the sum of its proper divisors (461523085).

1154057555 is a wasteful number, since it uses less digits than its factorization.

1154057555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13499 (or 13492 counting only the distinct ones).

The product of its (nonzero) digits is 87500, while the sum is 38.

The square root of 1154057555 is about 33971.4226225514. The cubic root of 1154057555 is about 1048.9202975428.

The spelling of 1154057555 in words is "one billion, one hundred fifty-four million, fifty-seven thousand, five hundred fifty-five".