2002551997 has 2 divisors, whose sum is σ = 2002551998. Its totient is φ = 2002551996.

The previous prime is 2002551989. The next prime is 2002552007. The reversal of 2002551997 is 7991552002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1977491961 + 25060036 = 44469^2 + 5006^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002551997 - 2³ = 2002551989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002551937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001275998 + 1001275999.

It is an arithmetic number, because the mean of its divisors is an integer number (1001275999).

Almost surely, 2^2002551997 is an apocalyptic number.

It is an amenable number.

2002551997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002551997 is an equidigital number, since it uses as much as digits as its factorization.

2002551997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 2002551997 is about 44749.8826478908. The cubic root of 2002551997 is about 1260.4567079164.

The spelling of 2002551997 in words is "two billion, two million, five hundred fifty-one thousand, nine hundred ninety-seven".