55578763 has 4 divisors (see below), whose sum is σ = 58848120. Its totient is φ = 52309408.

The previous prime is 55578749. The next prime is 55578799. The reversal of 55578763 is 36787555.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-55578763 is a prime.

It is a super-2 number, since 2×55578763² = 6177997793220338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55578713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1634653 + ... + 1634686.

It is an arithmetic number, because the mean of its divisors is an integer number (14712030).

Almost surely, 2^55578763 is an apocalyptic number.

55578763 is a deficient number, since it is larger than the sum of its proper divisors (3269357).

55578763 is a wasteful number, since it uses less digits than its factorization.

55578763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269356.

The product of its digits is 882000, while the sum is 46.

The square root of 55578763 is about 7455.1165651517. The cubic root of 55578763 is about 381.6245385722.

The spelling of 55578763 in words is "fifty-five million, five hundred seventy-eight thousand, seven hundred sixty-three".