1245454051 has 4 divisors (see below), whose sum is σ = 1318716072. Its totient is φ = 1172192032.

The previous prime is 1245454043. The next prime is 1245454139. The reversal of 1245454051 is 1504545421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1504545421 = 109 ⋅13803169.

It is a cyclic number.

It is not a de Polignac number, because 1245454051 - 2³ = 1245454043 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245404051) 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, 36630985 + ... + 36631018.

It is an arithmetic number, because the mean of its divisors is an integer number (329679018).

Almost surely, 2^1245454051 is an apocalyptic number.

1245454051 is a deficient number, since it is larger than the sum of its proper divisors (73262021).

1245454051 is an equidigital number, since it uses as much as digits as its factorization.

1245454051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73262020.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 1245454051 is about 35290.9910742104. The cubic root of 1245454051 is about 1075.9098987470.

Adding to 1245454051 its reverse (1504545421), we get a palindrome (2749999472).

The spelling of 1245454051 in words is "one billion, two hundred forty-five million, four hundred fifty-four thousand, fifty-one".