1522442251 has 4 divisors (see below), whose sum is σ = 1660846104. Its totient is φ = 1384038400.

The previous prime is 1522442237. The next prime is 1522442263.

It is a happy number.

1522442251 is nontrivially palindromic in base 10.

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 1522442251 - 2¹³ = 1522434059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1522442221) 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, 69201910 + ... + 69201931.

It is an arithmetic number, because the mean of its divisors is an integer number (415211526).

Almost surely, 2^1522442251 is an apocalyptic number.

1522442251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1522442251 is a deficient number, since it is larger than the sum of its proper divisors (138403853).

1522442251 is a wasteful number, since it uses less digits than its factorization.

1522442251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138403852.

The product of its digits is 6400, while the sum is 28.

The square root of 1522442251 is about 39018.4860162462. The cubic root of 1522442251 is about 1150.3948866946.

It can be divided in two parts, 15224 and 42251, that added together give a palindrome (57475).

The spelling of 1522442251 in words is "one billion, five hundred twenty-two million, four hundred forty-two thousand, two hundred fifty-one".