55679390 has 16 divisors (see below), whose sum is σ = 107932608. Its totient is φ = 20558496.

The previous prime is 55679387. The next prime is 55679423. The reversal of 55679390 is 9397655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214022 + ... + 214281.

It is an arithmetic number, because the mean of its divisors is an integer number (6745788).

Almost surely, 2^55679390 is an apocalyptic number.

55679390 is a deficient number, since it is larger than the sum of its proper divisors (52253218).

55679390 is a wasteful number, since it uses less digits than its factorization.

55679390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428323.

The product of its (nonzero) digits is 255150, while the sum is 44.

The square root of 55679390 is about 7461.8623680687. The cubic root of 55679390 is about 381.8547138996.

The spelling of 55679390 in words is "fifty-five million, six hundred seventy-nine thousand, three hundred ninety".