2002125551 has 8 divisors (see below), whose sum is σ = 2199131520. Its totient is φ = 1814282712.

The previous prime is 2002125533. The next prime is 2002125553. The reversal of 2002125551 is 1555212002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002125551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002125553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2290325 + ... + 2291198.

It is an arithmetic number, because the mean of its divisors is an integer number (274891440).

Almost surely, 2^2002125551 is an apocalyptic number.

2002125551 is a deficient number, since it is larger than the sum of its proper divisors (197005969).

2002125551 is a wasteful number, since it uses less digits than its factorization.

2002125551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581565.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 2002125551 is about 44745.1176219261. The cubic root of 2002125551 is about 1260.3672296105.

Adding to 2002125551 its reverse (1555212002), we get a palindrome (3557337553).

The spelling of 2002125551 in words is "two billion, two million, one hundred twenty-five thousand, five hundred fifty-one".