1150055551 has 2 divisors, whose sum is σ = 1150055552. Its totient is φ = 1150055550.

The previous prime is 1150055539. The next prime is 1150055561. The reversal of 1150055551 is 1555500511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1150055551 - 2¹³ = 1150047359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1150055521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575027775 + 575027776.

It is an arithmetic number, because the mean of its divisors is an integer number (575027776).

Almost surely, 2^1150055551 is an apocalyptic number.

1150055551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150055551 is an equidigital number, since it uses as much as digits as its factorization.

1150055551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3125, while the sum is 28.

The square root of 1150055551 is about 33912.4689605461. The cubic root of 1150055551 is about 1047.7064225239.

The spelling of 1150055551 in words is "one billion, one hundred fifty million, fifty-five thousand, five hundred fifty-one".