1245513051 has 8 divisors (see below), whose sum is σ = 1845204560. Its totient is φ = 830342016.

The previous prime is 1245513013. The next prime is 1245513097. The reversal of 1245513051 is 1503155421.

It is not a de Polignac number, because 1245513051 - 2¹³ = 1245504859 is a prime.

It is a super-2 number, since 2×1245513051² = 3102605520422657202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 46130113 = 1245513051 / (1 + 2 + 4 + 5 + 5 + 1 + 3 + 0 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245513151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23065030 + ... + 23065083.

It is an arithmetic number, because the mean of its divisors is an integer number (230650570).

Almost surely, 2^1245513051 is an apocalyptic number.

1245513051 is a deficient number, since it is larger than the sum of its proper divisors (599691509).

1245513051 is an equidigital number, since it uses as much as digits as its factorization.

1245513051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46130122 (or 46130116 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 1245513051 is about 35291.8269716942. The cubic root of 1245513051 is about 1075.9268879143.

Adding to 1245513051 its reverse (1503155421), we get a palindrome (2748668472).

The spelling of 1245513051 in words is "one billion, two hundred forty-five million, five hundred thirteen thousand, fifty-one".