1253456155 has 32 divisors (see below), whose sum is σ = 1833549696. Its totient is φ = 802996224.

The previous prime is 1253456137. The next prime is 1253456173. The reversal of 1253456155 is 5516543521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1253456137) and next prime (1253456173).

It is not a de Polignac number, because 1253456155 - 2¹⁷ = 1253325083 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73827 + ... + 89203.

It is an arithmetic number, because the mean of its divisors is an integer number (57298428).

Almost surely, 2^1253456155 is an apocalyptic number.

1253456155 is a deficient number, since it is larger than the sum of its proper divisors (580093541).

1253456155 is a wasteful number, since it uses less digits than its factorization.

1253456155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15543.

The product of its digits is 90000, while the sum is 37.

The square root of 1253456155 is about 35404.1827331178. The cubic root of 1253456155 is about 1078.2092394361.

Adding to 1253456155 its reverse (5516543521), we get a palindrome (6769999676).

The spelling of 1253456155 in words is "one billion, two hundred fifty-three million, four hundred fifty-six thousand, one hundred fifty-five".