3155240251 has 4 divisors (see below), whose sum is σ = 3155911632. Its totient is φ = 3154568872.

The previous prime is 3155240227. The next prime is 3155240261. The reversal of 3155240251 is 1520425513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3155240251 - 2¹⁷ = 3155109179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3155240261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328591 + ... + 338056.

It is an arithmetic number, because the mean of its divisors is an integer number (788977908).

Almost surely, 2^3155240251 is an apocalyptic number.

3155240251 is a deficient number, since it is larger than the sum of its proper divisors (671381).

3155240251 is an equidigital number, since it uses as much as digits as its factorization.

3155240251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671380.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 3155240251 is about 56171.5252685914. The cubic root of 3155240251 is about 1466.7096335955.

Adding to 3155240251 its reverse (1520425513), we get a palindrome (4675665764).

The spelling of 3155240251 in words is "three billion, one hundred fifty-five million, two hundred forty thousand, two hundred fifty-one".