553145620 has 12 divisors (see below), whose sum is σ = 1161605844. Its totient is φ = 221258240.

The previous prime is 553145603. The next prime is 553145627. The reversal of 553145620 is 26541355.

It can be written as a sum of positive squares in 2 ways, for example, as 160630276 + 392515344 = 12674^2 + 19812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553145627) 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, 13828621 + ... + 13828660.

It is an arithmetic number, because the mean of its divisors is an integer number (96800487).

Almost surely, 2^553145620 is an apocalyptic number.

It is an amenable number.

553145620 is an abundant number, since it is smaller than the sum of its proper divisors (608460224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

553145620 is a wasteful number, since it uses less digits than its factorization.

553145620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27657290 (or 27657288 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 553145620 is about 23519.0480249520. The cubic root of 553145620 is about 820.8802860674.

Adding to 553145620 its reverse (26541355), we get a palindrome (579686975).

The spelling of 553145620 in words is "five hundred fifty-three million, one hundred forty-five thousand, six hundred twenty".