55405371 has 16 divisors (see below), whose sum is σ = 86392064. Its totient is φ = 30923424.

The previous prime is 55405327. The next prime is 55405379. The reversal of 55405371 is 17350455.

It is not a de Polignac number, because 55405371 - 2⁹ = 55404859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55405379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29776 + ... + 31581.

It is an arithmetic number, because the mean of its divisors is an integer number (5399504).

Almost surely, 2^55405371 is an apocalyptic number.

55405371 is a deficient number, since it is larger than the sum of its proper divisors (30986693).

55405371 is a wasteful number, since it uses less digits than its factorization.

55405371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61410.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55405371 is about 7443.4784207385. The cubic root of 55405371 is about 381.2272670849.

The spelling of 55405371 in words is "fifty-five million, four hundred five thousand, three hundred seventy-one".