4555213561 has 4 divisors (see below), whose sum is σ = 4555369872. Its totient is φ = 4555057252.

The previous prime is 4555213519. The next prime is 4555213567. The reversal of 4555213561 is 1653125554.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1653125554 = 2 ⋅826562777.

It is a cyclic number.

It is not a de Polignac number, because 4555213561 - 2⁷ = 4555213433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4555213561.

It is not an unprimeable number, because it can be changed into a prime (4555213567) 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, 20035 + ... + 97528.

It is an arithmetic number, because the mean of its divisors is an integer number (1138842468).

Almost surely, 2^4555213561 is an apocalyptic number.

It is an amenable number.

4555213561 is a deficient number, since it is larger than the sum of its proper divisors (156311).

4555213561 is a wasteful number, since it uses less digits than its factorization.

4555213561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156310.

The product of its digits is 90000, while the sum is 37.

The square root of 4555213561 is about 67492.3222374219. The cubic root of 4555213561 is about 1657.6884603641.

The spelling of 4555213561 in words is "four billion, five hundred fifty-five million, two hundred thirteen thousand, five hundred sixty-one".