55430723 has 4 divisors (see below), whose sum is σ = 55660968. Its totient is φ = 55200480.

The previous prime is 55430717. The next prime is 55430731. The reversal of 55430723 is 32703455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32703455 = 5 ⋅6540691.

It is a cyclic number.

It is not a de Polignac number, because 55430723 - 2¹⁸ = 55168579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55430743) 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, 114761 + ... + 115242.

It is an arithmetic number, because the mean of its divisors is an integer number (13915242).

Almost surely, 2^55430723 is an apocalyptic number.

55430723 is a deficient number, since it is larger than the sum of its proper divisors (230245).

55430723 is a wasteful number, since it uses less digits than its factorization.

55430723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230244.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 55430723 is about 7445.1811932283. The cubic root of 55430723 is about 381.2854046490.

The spelling of 55430723 in words is "fifty-five million, four hundred thirty thousand, seven hundred twenty-three".