1501052081 has 2 divisors, whose sum is σ = 1501052082. Its totient is φ = 1501052080.

The previous prime is 1501052057. The next prime is 1501052123. The reversal of 1501052081 is 1802501051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1485717025 + 15335056 = 38545^2 + 3916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1501052081 is a prime.

It is a super-2 number, since 2×1501052081² = 4506314699748861122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1501052051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750526040 + 750526041.

It is an arithmetic number, because the mean of its divisors is an integer number (750526041).

Almost surely, 2^1501052081 is an apocalyptic number.

It is an amenable number.

1501052081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1501052081 is an equidigital number, since it uses as much as digits as its factorization.

1501052081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 1501052081 is about 38743.4133886006. The cubic root of 1501052081 is about 1144.9818093638.

The spelling of 1501052081 in words is "one billion, five hundred one million, fifty-two thousand, eighty-one".