1155630051 has 8 divisors (see below), whose sum is σ = 1712044560. Its totient is φ = 770420016.

The previous prime is 1155630043. The next prime is 1155630053. The reversal of 1155630051 is 1500365511.

It is not a de Polignac number, because 1155630051 - 2³ = 1155630043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 42801113 = 1155630051 / (1 + 1 + 5 + 5 + 6 + 3 + 0 + 0 + 5 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 1155629997 and 1155630024.

It is not an unprimeable number, because it can be changed into a prime (1155630053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21400530 + ... + 21400583.

It is an arithmetic number, because the mean of its divisors is an integer number (214005570).

Almost surely, 2^1155630051 is an apocalyptic number.

1155630051 is a deficient number, since it is larger than the sum of its proper divisors (556414509).

1155630051 is an equidigital number, since it uses as much as digits as its factorization.

1155630051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42801122 (or 42801116 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 1155630051 is about 33994.5591381915. The cubic root of 1155630051 is about 1049.3964940071.

Adding to 1155630051 its reverse (1500365511), we get a palindrome (2655995562).

The spelling of 1155630051 in words is "one billion, one hundred fifty-five million, six hundred thirty thousand, fifty-one".