55464869 has 4 divisors (see below), whose sum is σ = 55519596. Its totient is φ = 55410144.

The previous prime is 55464823. The next prime is 55464901. The reversal of 55464869 is 96846455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96846455 = 5 ⋅19369291.

It can be written as a sum of positive squares in 2 ways, for example, as 35259844 + 20205025 = 5938^2 + 4495^2 .

It is a cyclic number.

It is not a de Polignac number, because 55464869 - 2⁸ = 55464613 is a prime.

It is a super-2 number, since 2×55464869² = 6152703386374322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55464809) 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, 25814 + ... + 27879.

It is an arithmetic number, because the mean of its divisors is an integer number (13879899).

Almost surely, 2^55464869 is an apocalyptic number.

It is an amenable number.

55464869 is a deficient number, since it is larger than the sum of its proper divisors (54727).

55464869 is a wasteful number, since it uses less digits than its factorization.

55464869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54726.

The product of its digits is 1036800, while the sum is 47.

The square root of 55464869 is about 7447.4740012974. The cubic root of 55464869 is about 381.3636807281.

The spelling of 55464869 in words is "fifty-five million, four hundred sixty-four thousand, eight hundred sixty-nine".