554635645 has 4 divisors (see below), whose sum is σ = 665562780. Its totient is φ = 443708512.

The previous prime is 554635637. The next prime is 554635649. The reversal of 554635645 is 546536455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546536455 = 5 ⋅109307291.

It can be written as a sum of positive squares in 2 ways, for example, as 424607236 + 130028409 = 20606^2 + 11403^2 .

It is a cyclic number.

It is not a de Polignac number, because 554635645 - 2³ = 554635637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (554635649) 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, 55463560 + ... + 55463569.

It is an arithmetic number, because the mean of its divisors is an integer number (166390695).

Almost surely, 2^554635645 is an apocalyptic number.

It is an amenable number.

554635645 is a deficient number, since it is larger than the sum of its proper divisors (110927135).

554635645 is a wasteful number, since it uses less digits than its factorization.

554635645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110927134.

The product of its digits is 1080000, while the sum is 43.

The square root of 554635645 is about 23550.7037049851. The cubic root of 554635645 is about 821.6167018694.

The spelling of 554635645 in words is "five hundred fifty-four million, six hundred thirty-five thousand, six hundred forty-five".