1522112251 has 4 divisors (see below), whose sum is σ = 1660486104. Its totient is φ = 1383738400.

The previous prime is 1522112219. The next prime is 1522112261.

It is a happy number.

1522112251 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 1522112251 - 2⁵ = 1522112219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1522112201) 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, 69186910 + ... + 69186931.

It is an arithmetic number, because the mean of its divisors is an integer number (415121526).

Almost surely, 2^1522112251 is an apocalyptic number.

1522112251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1522112251 is a deficient number, since it is larger than the sum of its proper divisors (138373853).

1522112251 is a wasteful number, since it uses less digits than its factorization.

1522112251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138373852.

The product of its digits is 400, while the sum is 22.

The square root of 1522112251 is about 39014.2570222733. The cubic root of 1522112251 is about 1150.3117619773.

It can be divided in two parts, 15221 and 12251, that added together give a palindrome (27472).

The spelling of 1522112251 in words is "one billion, five hundred twenty-two million, one hundred twelve thousand, two hundred fifty-one".