2151004251 has 8 divisors (see below), whose sum is σ = 3128733504. Its totient is φ = 1303638920.

The previous prime is 2151004189. The next prime is 2151004253. The reversal of 2151004251 is 1524001512.

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

It is a cyclic number.

It is not a de Polignac number, because 2151004251 - 2¹³ = 2150996059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151004253) 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, 32590941 + ... + 32591006.

It is an arithmetic number, because the mean of its divisors is an integer number (391091688).

Almost surely, 2^2151004251 is an apocalyptic number.

2151004251 is a deficient number, since it is larger than the sum of its proper divisors (977729253).

2151004251 is a wasteful number, since it uses less digits than its factorization.

2151004251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65181961.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 2151004251 is about 46378.9203302535. The cubic root of 2151004251 is about 1290.8638028032.

Adding to 2151004251 its reverse (1524001512), we get a palindrome (3675005763).

The spelling of 2151004251 in words is "two billion, one hundred fifty-one million, four thousand, two hundred fifty-one".