1151015553 has 6 divisors (see below), whose sum is σ = 1662578034. Its totient is φ = 767343696.

The previous prime is 1151015533. The next prime is 1151015557. The reversal of 1151015553 is 3555101511.

1151015553 is a `hidden beast` number, since 1 + 1 + 5 + 101 + 5 + 553 = 666.

It can be written as a sum of positive squares in only one way, i.e., 911013489 + 240002064 = 30183^2 + 15492^2 .

It is not a de Polignac number, because 1151015553 - 2¹⁴ = 1150999169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1151015557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63945300 + ... + 63945317.

It is an arithmetic number, because the mean of its divisors is an integer number (277096339).

Almost surely, 2^1151015553 is an apocalyptic number.

It is an amenable number.

1151015553 is a deficient number, since it is larger than the sum of its proper divisors (511562481).

1151015553 is a wasteful number, since it uses less digits than its factorization.

1151015553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127890623 (or 127890620 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 27.

The square root of 1151015553 is about 33926.6201234370. The cubic root of 1151015553 is about 1047.9978636715.

The spelling of 1151015553 in words is "one billion, one hundred fifty-one million, fifteen thousand, five hundred fifty-three".