55678401 has 16 divisors (see below), whose sum is σ = 83291520. Its totient is φ = 36756720.

The previous prime is 55678393. The next prime is 55678411. The reversal of 55678401 is 10487655.

It is not a de Polignac number, because 55678401 - 2³ = 55678393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55678411) 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, 7230 + ... + 12791.

It is an arithmetic number, because the mean of its divisors is an integer number (5205720).

Almost surely, 2^55678401 is an apocalyptic number.

It is an amenable number.

55678401 is a deficient number, since it is larger than the sum of its proper divisors (27613119).

55678401 is a wasteful number, since it uses less digits than its factorization.

55678401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20133 (or 20127 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 55678401 is about 7461.7960974554. The cubic root of 55678401 is about 381.8524529999.

The spelling of 55678401 in words is "fifty-five million, six hundred seventy-eight thousand, four hundred one".