1151404551 has 20 divisors (see below), whose sum is σ = 1876364424. Its totient is φ = 697820400.

The previous prime is 1151404537. The next prime is 1151404649. The reversal of 1151404551 is 1554041511.

It is not a de Polignac number, because 1151404551 - 2²⁵ = 1117850119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151404451) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 645240 + ... + 647021.

Almost surely, 2^1151404551 is an apocalyptic number.

1151404551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1151404551 is a deficient number, since it is larger than the sum of its proper divisors (724959873).

1151404551 is a wasteful number, since it uses less digits than its factorization.

1151404551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292284 (or 1292275 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 1151404551 is about 33932.3525709609. The cubic root of 1151404551 is about 1048.1159110646.

The spelling of 1151404551 in words is "one billion, one hundred fifty-one million, four hundred four thousand, five hundred fifty-one".