1150055621 has 16 divisors (see below), whose sum is σ = 1363528320. Its totient is φ = 956214720.

The previous prime is 1150055611. The next prime is 1150055623. The reversal of 1150055621 is 1265500511.

It is a cyclic number.

It is not a de Polignac number, because 1150055621 - 2²⁶ = 1082946757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150055623) 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 15 ways as a sum of consecutive naturals, for example, 21305 + ... + 52478.

It is an arithmetic number, because the mean of its divisors is an integer number (85220520).

Almost surely, 2^1150055621 is an apocalyptic number.

1150055621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1150055621 is a deficient number, since it is larger than the sum of its proper divisors (213472699).

1150055621 is a wasteful number, since it uses less digits than its factorization.

1150055621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73916.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 1150055621 is about 33912.4699926148. The cubic root of 1150055621 is about 1047.7064437807.

The spelling of 1150055621 in words is "one billion, one hundred fifty million, fifty-five thousand, six hundred twenty-one".