4155242251 has 4 divisors (see below), whose sum is σ = 4156261552. Its totient is φ = 4154222952.

The previous prime is 4155242219. The next prime is 4155242309. The reversal of 4155242251 is 1522425514.

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 4155242251 - 2⁵ = 4155242219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4155240251) 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, 503511 + ... + 511696.

It is an arithmetic number, because the mean of its divisors is an integer number (1039065388).

Almost surely, 2^4155242251 is an apocalyptic number.

4155242251 is a deficient number, since it is larger than the sum of its proper divisors (1019301).

4155242251 is a wasteful number, since it uses less digits than its factorization.

4155242251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019300.

The product of its digits is 16000, while the sum is 31.

The square root of 4155242251 is about 64461.1685513069. The cubic root of 4155242251 is about 1607.6769412122.

Adding to 4155242251 its reverse (1522425514), we get a palindrome (5677667765).

The spelling of 4155242251 in words is "four billion, one hundred fifty-five million, two hundred forty-two thousand, two hundred fifty-one".