55745405 has 8 divisors (see below), whose sum is σ = 66955992. Its totient is φ = 44555328.

The previous prime is 55745381. The next prime is 55745413. The reversal of 55745405 is 50454755.

It can be written as a sum of positive squares in 4 ways, for example, as 9966649 + 45778756 = 3157^2 + 6766^2 .

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 55745405 - 2⁶ = 55745341 is a prime.

It is a super-2 number, since 2×55745405² = 6215100357228050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 1679 + ... + 10691.

It is an arithmetic number, because the mean of its divisors is an integer number (8369499).

Almost surely, 2^55745405 is an apocalyptic number.

It is an amenable number.

55745405 is a deficient number, since it is larger than the sum of its proper divisors (11210587).

55745405 is a wasteful number, since it uses less digits than its factorization.

55745405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10255.

The product of its (nonzero) digits is 70000, while the sum is 35.

The square root of 55745405 is about 7466.2845512343. The cubic root of 55745405 is about 382.0055667436.

The spelling of 55745405 in words is "fifty-five million, seven hundred forty-five thousand, four hundred five".