2157333551 has 2 divisors, whose sum is σ = 2157333552. Its totient is φ = 2157333550.

The previous prime is 2157333547. The next prime is 2157333557. The reversal of 2157333551 is 1553337512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2157333551 - 2² = 2157333547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157333557) 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 as a sum of consecutive naturals, namely, 1078666775 + 1078666776.

It is an arithmetic number, because the mean of its divisors is an integer number (1078666776).

Almost surely, 2^2157333551 is an apocalyptic number.

2157333551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157333551 is an equidigital number, since it uses as much as digits as its factorization.

2157333551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47250, while the sum is 35.

The square root of 2157333551 is about 46447.1048721016. The cubic root of 2157333551 is about 1292.1286792298.

The spelling of 2157333551 in words is "two billion, one hundred fifty-seven million, three hundred thirty-three thousand, five hundred fifty-one".