2551001530 has 128 divisors (see below), whose sum is σ = 6180986880. Its totient is φ = 734173440.

The previous prime is 2551001527. The next prime is 2551001533. The reversal of 2551001530 is 351001552.

It is an interprime number because it is at equal distance from previous prime (2551001527) and next prime (2551001533).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (2551001533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 511107 + ... + 516073.

It is an arithmetic number, because the mean of its divisors is an integer number (48288960).

Almost surely, 2^2551001530 is an apocalyptic number.

2551001530 is an abundant number, since it is smaller than the sum of its proper divisors (3629985350).

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

2551001530 is a wasteful number, since it uses less digits than its factorization.

2551001530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5044.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 2551001530 is about 50507.4403429831. The cubic root of 2551001530 is about 1366.3760457458.

Adding to 2551001530 its sum of digits (22), we get a palindrome (2551001552).

The spelling of 2551001530 in words is "two billion, five hundred fifty-one million, one thousand, five hundred thirty".