55265439 has 4 divisors (see below), whose sum is σ = 73687256. Its totient is φ = 36843624.

The previous prime is 55265437. The next prime is 55265443. The reversal of 55265439 is 93456255.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55265439 - 2¹ = 55265437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55265397 and 55265406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55265437) 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, 9210904 + ... + 9210909.

It is an arithmetic number, because the mean of its divisors is an integer number (18421814).

Almost surely, 2^55265439 is an apocalyptic number.

55265439 is a deficient number, since it is larger than the sum of its proper divisors (18421817).

55265439 is a wasteful number, since it uses less digits than its factorization.

55265439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18421816.

The product of its digits is 162000, while the sum is 39.

The square root of 55265439 is about 7434.0728406439. The cubic root of 55265439 is about 380.9060535378.

The spelling of 55265439 in words is "fifty-five million, two hundred sixty-five thousand, four hundred thirty-nine".