55554477 has 8 divisors (see below), whose sum is σ = 80806560. Its totient is φ = 33669360.

The previous prime is 55554383. The next prime is 55554479. The reversal of 55554477 is 77445555.

It is a happy number.

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

It is not a de Polignac number, because 55554477 - 2¹⁵ = 55521709 is a prime.

It is a super-3 number, since 3×55554477³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55554479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841702 + ... + 841767.

It is an arithmetic number, because the mean of its divisors is an integer number (10100820).

Almost surely, 2^55554477 is an apocalyptic number.

It is an amenable number.

55554477 is a deficient number, since it is larger than the sum of its proper divisors (25252083).

55554477 is a wasteful number, since it uses less digits than its factorization.

55554477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683483.

The product of its digits is 490000, while the sum is 42.

The square root of 55554477 is about 7453.4875729419. The cubic root of 55554477 is about 381.5689448927.

The spelling of 55554477 in words is "fifty-five million, five hundred fifty-four thousand, four hundred seventy-seven".