55640350 has 24 divisors (see below), whose sum is σ = 106832448. Its totient is φ = 21537600.

The previous prime is 55640287. The next prime is 55640399. The reversal of 55640350 is 5304655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16399 + ... + 19498.

It is an arithmetic number, because the mean of its divisors is an integer number (4451352).

Almost surely, 2^55640350 is an apocalyptic number.

55640350 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55640350 is a deficient number, since it is larger than the sum of its proper divisors (51192098).

55640350 is a wasteful number, since it uses less digits than its factorization.

55640350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35940 (or 35935 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 55640350 is about 7459.2459404420. The cubic root of 55640350 is about 381.7654463173.

The spelling of 55640350 in words is "fifty-five million, six hundred forty thousand, three hundred fifty".