553785397 has 4 divisors (see below), whose sum is σ = 604129536. Its totient is φ = 503441260.

The previous prime is 553785377. The next prime is 553785409. The reversal of 553785397 is 793587355.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 553785397 - 2¹⁵ = 553752629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553785377) 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, 25172053 + ... + 25172074.

It is an arithmetic number, because the mean of its divisors is an integer number (151032384).

Almost surely, 2^553785397 is an apocalyptic number.

It is an amenable number.

553785397 is a deficient number, since it is larger than the sum of its proper divisors (50344139).

553785397 is a wasteful number, since it uses less digits than its factorization.

553785397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50344138.

The product of its digits is 3969000, while the sum is 52.

The square root of 553785397 is about 23532.6453464119. The cubic root of 553785397 is about 821.1966451842.

The spelling of 553785397 in words is "five hundred fifty-three million, seven hundred eighty-five thousand, three hundred ninety-seven".