2195519551 has 4 divisors (see below), whose sum is σ = 2220188400. Its totient is φ = 2170850704.

The previous prime is 2195519549. The next prime is 2195519561. The reversal of 2195519551 is 1559155912.

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 2195519551 - 2¹ = 2195519549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2195519498 and 2195519507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195519561) 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, 12334291 + ... + 12334468.

It is an arithmetic number, because the mean of its divisors is an integer number (555047100).

Almost surely, 2^2195519551 is an apocalyptic number.

2195519551 is a deficient number, since it is larger than the sum of its proper divisors (24668849).

2195519551 is an equidigital number, since it uses as much as digits as its factorization.

2195519551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24668848.

The product of its digits is 101250, while the sum is 43.

The square root of 2195519551 is about 46856.3715091128. The cubic root of 2195519551 is about 1299.7079326118.

The spelling of 2195519551 in words is "two billion, one hundred ninety-five million, five hundred nineteen thousand, five hundred fifty-one".