2605157551 has 8 divisors (see below), whose sum is σ = 2697230880. Its totient is φ = 2513233632.

The previous prime is 2605157543. The next prime is 2605157563. The reversal of 2605157551 is 1557515062.

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 2605157551 - 2³ = 2605157543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2605157551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605157591) 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, 1260 + ... + 72193.

It is an arithmetic number, because the mean of its divisors is an integer number (337153860).

Almost surely, 2^2605157551 is an apocalyptic number.

2605157551 is a deficient number, since it is larger than the sum of its proper divisors (92073329).

2605157551 is a wasteful number, since it uses less digits than its factorization.

2605157551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74705.

The product of its (nonzero) digits is 52500, while the sum is 37.

The square root of 2605157551 is about 51040.7440286679. The cubic root of 2605157551 is about 1375.9774957377.

The spelling of 2605157551 in words is "two billion, six hundred five million, one hundred fifty-seven thousand, five hundred fifty-one".