55405246 has 32 divisors (see below), whose sum is σ = 94203648. Its totient is φ = 24261120.

The previous prime is 55405223. The next prime is 55405247. The reversal of 55405246 is 64250455.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55405247) 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, 42070 + ... + 43366.

It is an arithmetic number, because the mean of its divisors is an integer number (2943864).

Almost surely, 2^55405246 is an apocalyptic number.

55405246 is a deficient number, since it is larger than the sum of its proper divisors (38798402).

55405246 is a wasteful number, since it uses less digits than its factorization.

55405246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 55405246 is about 7443.4700241218. The cubic root of 55405246 is about 381.2269803892.

The spelling of 55405246 in words is "fifty-five million, four hundred five thousand, two hundred forty-six".