1002775601 has 12 divisors (see below), whose sum is σ = 1043653104. Its totient is φ = 963438000.

The previous prime is 1002775589. The next prime is 1002775633. The reversal of 1002775601 is 1065772001.

It is a de Polignac number, because none of the positive numbers 2^k-1002775601 is a prime.

It is a super-2 number, since 2×1002775601² = 2011117811921822402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002775661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174626 + ... + 180276.

It is an arithmetic number, because the mean of its divisors is an integer number (86971092).

Almost surely, 2^1002775601 is an apocalyptic number.

It is an amenable number.

1002775601 is a deficient number, since it is larger than the sum of its proper divisors (40877503).

1002775601 is an equidigital number, since it uses as much as digits as its factorization.

1002775601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5920 (or 5891 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 1002775601 is about 31666.6322964726. The cubic root of 1002775601 is about 1000.9243456552.

The spelling of 1002775601 in words is "one billion, two million, seven hundred seventy-five thousand, six hundred one".