2551005402 has 32 divisors (see below), whose sum is σ = 5594111424. Its totient is φ = 769104000.

The previous prime is 2551005383. The next prime is 2551005409. The reversal of 2551005402 is 2045001552.

It is a happy number.

It is a super-2 number, since 2×2551005402² = 13015257122066363208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2551005409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85099 + ... + 111102.

It is an arithmetic number, because the mean of its divisors is an integer number (174815982).

Almost surely, 2^2551005402 is an apocalyptic number.

2551005402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2551005402 is an abundant number, since it is smaller than the sum of its proper divisors (3043106022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2551005402 is a wasteful number, since it uses less digits than its factorization.

2551005402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196414.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 2551005402 is about 50507.4786739548. The cubic root of 2551005402 is about 1366.3767370567.

Adding to 2551005402 its reverse (2045001552), we get a palindrome (4596006954).

The spelling of 2551005402 in words is "two billion, five hundred fifty-one million, five thousand, four hundred two".