2151752761 has 2 divisors, whose sum is σ = 2151752762. Its totient is φ = 2151752760.

The previous prime is 2151752719. The next prime is 2151752819. The reversal of 2151752761 is 1672571512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1182053161 + 969699600 = 34381^2 + 31140^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151752761 - 2⁷ = 2151752633 is a prime.

It is a super-2 number, since 2×2151752761² = 9260079888942246242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2151752761.

It is not a weakly prime, because it can be changed into another prime (2151759761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075876380 + 1075876381.

It is an arithmetic number, because the mean of its divisors is an integer number (1075876381).

Almost surely, 2^2151752761 is an apocalyptic number.

It is an amenable number.

2151752761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151752761 is an equidigital number, since it uses as much as digits as its factorization.

2151752761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 37.

The square root of 2151752761 is about 46386.9891348857. The cubic root of 2151752761 is about 1291.0135177422.

It can be divided in two parts, 215 and 1752761, that added together give a square (1752976 = 1324²).

The spelling of 2151752761 in words is "two billion, one hundred fifty-one million, seven hundred fifty-two thousand, seven hundred sixty-one".