55779650 has 24 divisors (see below), whose sum is σ = 104767104. Its totient is φ = 22093200.

The previous prime is 55779641. The next prime is 55779653. The reversal of 55779650 is 5697755.

It is a super-2 number, since 2×55779650² = 6222738708245000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55779653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266 + ... + 10565.

It is an arithmetic number, because the mean of its divisors is an integer number (4365296).

Almost surely, 2^55779650 is an apocalyptic number.

55779650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55779650 is a deficient number, since it is larger than the sum of its proper divisors (48987454).

55779650 is a wasteful number, since it uses less digits than its factorization.

55779650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10946 (or 10941 counting only the distinct ones).

The product of its (nonzero) digits is 330750, while the sum is 44.

The square root of 55779650 is about 7468.5775084684. The cubic root of 55779650 is about 382.0837741031.

The spelling of 55779650 in words is "fifty-five million, seven hundred seventy-nine thousand, six hundred fifty".