55440545 has 8 divisors (see below), whose sum is σ = 68076096. Its totient is φ = 43320816.

The previous prime is 55440533. The next prime is 55440559. The reversal of 55440545 is 54504455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55440545 - 2⁴ = 55440529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128717 + ... + 129146.

It is an arithmetic number, because the mean of its divisors is an integer number (8509512).

Almost surely, 2^55440545 is an apocalyptic number.

It is an amenable number.

55440545 is a deficient number, since it is larger than the sum of its proper divisors (12635551).

55440545 is a wasteful number, since it uses less digits than its factorization.

55440545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257911.

The product of its (nonzero) digits is 40000, while the sum is 32.

The square root of 55440545 is about 7445.8407852975. The cubic root of 55440545 is about 381.3079238337.

The spelling of 55440545 in words is "fifty-five million, four hundred forty thousand, five hundred forty-five".