2951321557 has 2 divisors, whose sum is σ = 2951321558. Its totient is φ = 2951321556.

The previous prime is 2951321507. The next prime is 2951321563. The reversal of 2951321557 is 7551231592.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2493404356 + 457917201 = 49934^2 + 21399^2 .

It is a cyclic number.

It is not a de Polignac number, because 2951321557 - 2¹¹ = 2951319509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2951321507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1475660778 + 1475660779.

It is an arithmetic number, because the mean of its divisors is an integer number (1475660779).

Almost surely, 2^2951321557 is an apocalyptic number.

It is an amenable number.

2951321557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2951321557 is an equidigital number, since it uses as much as digits as its factorization.

2951321557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94500, while the sum is 40.

The square root of 2951321557 is about 54326.0670120707. The cubic root of 2951321557 is about 1434.4062757689.

The spelling of 2951321557 in words is "two billion, nine hundred fifty-one million, three hundred twenty-one thousand, five hundred fifty-seven".