2152777517 has 4 divisors (see below), whose sum is σ = 2348484576. Its totient is φ = 1957070460.

The previous prime is 2152777493. The next prime is 2152777531. The reversal of 2152777517 is 7157772512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2152777517 - 2⁶ = 2152777453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152777537) 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, 97853513 + ... + 97853534.

It is an arithmetic number, because the mean of its divisors is an integer number (587121144).

Almost surely, 2^2152777517 is an apocalyptic number.

It is an amenable number.

2152777517 is a deficient number, since it is larger than the sum of its proper divisors (195707059).

2152777517 is a wasteful number, since it uses less digits than its factorization.

2152777517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195707058.

The product of its digits is 240100, while the sum is 44.

The square root of 2152777517 is about 46398.0335466925. The cubic root of 2152777517 is about 1291.2184303618.

The spelling of 2152777517 in words is "two billion, one hundred fifty-two million, seven hundred seventy-seven thousand, five hundred seventeen".