1155430501 has 6 divisors (see below), whose sum is σ = 1161953702. Its totient is φ = 1148943720.

The previous prime is 1155430459. The next prime is 1155430519. The reversal of 1155430501 is 1050345511.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 872316225 + 283114276 = 29535^2 + 16826^2 .

It is not a de Polignac number, because 1155430501 - 2¹³ = 1155422309 is a prime.

It is a super-2 number, since 2×1155430501² = 2670039285282222002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155430531) 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, 14011 + ... + 50071.

Almost surely, 2^1155430501 is an apocalyptic number.

It is an amenable number.

1155430501 is a deficient number, since it is larger than the sum of its proper divisors (6523201).

1155430501 is an frugal number, since it uses more digits than its factorization.

1155430501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36419 (or 36240 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1155430501 is about 33991.6239829756. The cubic root of 1155430501 is about 1049.3360885383.

The spelling of 1155430501 in words is "one billion, one hundred fifty-five million, four hundred thirty thousand, five hundred one".