611252553 has 16 divisors (see below), whose sum is σ = 858708800. Its totient is φ = 385689600.

The previous prime is 611252539. The next prime is 611252597. The reversal of 611252553 is 355252116.

It is a happy number.

It is not a de Polignac number, because 611252553 - 2⁹ = 611252041 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 611252553.

It is not an unprimeable number, because it can be changed into a prime (611252953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63993 + ... + 72921.

It is an arithmetic number, because the mean of its divisors is an integer number (53669300).

Almost surely, 2^611252553 is an apocalyptic number.

It is an amenable number.

611252553 is a deficient number, since it is larger than the sum of its proper divisors (247456247).

611252553 is a wasteful number, since it uses less digits than its factorization.

611252553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152.

The product of its digits is 9000, while the sum is 30.

The square root of 611252553 is about 24723.5222611989. The cubic root of 611252553 is about 848.6726933767.

The spelling of 611252553 in words is "six hundred eleven million, two hundred fifty-two thousand, five hundred fifty-three".