55780248 has 16 divisors (see below), whose sum is σ = 139450680. Its totient is φ = 18593408.

The previous prime is 55780243. The next prime is 55780261. The reversal of 55780248 is 84208755.

It is a super-2 number, since 2×55780248² = 6222872133883008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55780243) 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, 1162065 + ... + 1162112.

Almost surely, 2^55780248 is an apocalyptic number.

It is an amenable number.

55780248 is an abundant number, since it is smaller than the sum of its proper divisors (83670432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55780248 is a wasteful number, since it uses less digits than its factorization.

55780248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324186 (or 2324182 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 55780248 is about 7468.6175427585. The cubic root of 55780248 is about 382.0851395072.

The spelling of 55780248 in words is "fifty-five million, seven hundred eighty thousand, two hundred forty-eight".