55780410 has 32 divisors (see below), whose sum is σ = 152998272. Its totient is φ = 12749760.

The previous prime is 55780397. The next prime is 55780411. The reversal of 55780410 is 1408755.

It is a super-2 number, since 2×55780410² = 6222908279536200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (55780411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132601 + ... + 133020.

It is an arithmetic number, because the mean of its divisors is an integer number (4781196).

Almost surely, 2^55780410 is an apocalyptic number.

55780410 is an abundant number, since it is smaller than the sum of its proper divisors (97217862).

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

55780410 is a wasteful number, since it uses less digits than its factorization.

55780410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265638.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 55780410 is about 7468.6283881313. The cubic root of 55780410 is about 382.0855093976.

The spelling of 55780410 in words is "fifty-five million, seven hundred eighty thousand, four hundred ten".