1056147901 has 2 divisors, whose sum is σ = 1056147902. Its totient is φ = 1056147900.

The previous prime is 1056147881. The next prime is 1056147923. The reversal of 1056147901 is 1097416501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 805083876 + 251064025 = 28374^2 + 15845^2 .

It is an emirp because it is prime and its reverse (1097416501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1056147901 - 2¹³ = 1056139709 is a prime.

It is a super-2 number, since 2×1056147901² = 2230896777573411602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1056147941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528073950 + 528073951.

It is an arithmetic number, because the mean of its divisors is an integer number (528073951).

Almost surely, 2^1056147901 is an apocalyptic number.

It is an amenable number.

1056147901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056147901 is an equidigital number, since it uses as much as digits as its factorization.

1056147901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 1056147901 is about 32498.4292081940. The cubic root of 1056147901 is about 1018.3762133253.

The spelling of 1056147901 in words is "one billion, fifty-six million, one hundred forty-seven thousand, nine hundred one".