1651522141 has 2 divisors, whose sum is σ = 1651522142. Its totient is φ = 1651522140.

The previous prime is 1651522139. The next prime is 1651522151. The reversal of 1651522141 is 1412251561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 973128025 + 678394116 = 31195^2 + 26046^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651522141 - 2¹ = 1651522139 is a prime.

Together with 1651522139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1651522151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825761070 + 825761071.

It is an arithmetic number, because the mean of its divisors is an integer number (825761071).

Almost surely, 2^1651522141 is an apocalyptic number.

It is an amenable number.

1651522141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651522141 is an equidigital number, since it uses as much as digits as its factorization.

1651522141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 28.

The square root of 1651522141 is about 40638.9239645934. The cubic root of 1651522141 is about 1182.0290048263.

The spelling of 1651522141 in words is "one billion, six hundred fifty-one million, five hundred twenty-two thousand, one hundred forty-one".