1245353555 has 4 divisors (see below), whose sum is σ = 1494424272. Its totient is φ = 996282840.

The previous prime is 1245353539. The next prime is 1245353587. The reversal of 1245353555 is 5553535421.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1245353555 - 2⁴ = 1245353539 is a prime.

It is a super-2 number, since 2×1245353555² = 3101810953902276050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124535351 + ... + 124535360.

It is an arithmetic number, because the mean of its divisors is an integer number (373606068).

Almost surely, 2^1245353555 is an apocalyptic number.

1245353555 is a deficient number, since it is larger than the sum of its proper divisors (249070717).

1245353555 is an equidigital number, since it uses as much as digits as its factorization.

1245353555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249070716.

The product of its digits is 225000, while the sum is 38.

The square root of 1245353555 is about 35289.5672260230. The cubic root of 1245353555 is about 1075.8809594887.

Adding to 1245353555 its reverse (5553535421), we get a palindrome (6798888976).

The spelling of 1245353555 in words is "one billion, two hundred forty-five million, three hundred fifty-three thousand, five hundred fifty-five".