1252241451 has 12 divisors (see below), whose sum is σ = 1875785912. Its totient is φ = 834827472.

The previous prime is 1252241449. The next prime is 1252241467. The reversal of 1252241451 is 1541422521.

It is a happy number.

It is not a de Polignac number, because 1252241451 - 2¹ = 1252241449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252241401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2576386 + ... + 2576871.

Almost surely, 2^1252241451 is an apocalyptic number.

1252241451 is a deficient number, since it is larger than the sum of its proper divisors (623544461).

1252241451 is an frugal number, since it uses more digits than its factorization.

1252241451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153272 (or 5153260 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1252241451 is about 35387.0237657817. The cubic root of 1252241451 is about 1077.8608351807.

Adding to 1252241451 its reverse (1541422521), we get a palindrome (2793663972).

The spelling of 1252241451 in words is "one billion, two hundred fifty-two million, two hundred forty-one thousand, four hundred fifty-one".