55209662 has 4 divisors (see below), whose sum is σ = 82814496. Its totient is φ = 27604830.

The previous prime is 55209619. The next prime is 55209673. The reversal of 55209662 is 26690255.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13802414 + ... + 13802417.

It is an arithmetic number, because the mean of its divisors is an integer number (20703624).

Almost surely, 2^55209662 is an apocalyptic number.

55209662 is a deficient number, since it is larger than the sum of its proper divisors (27604834).

55209662 is a wasteful number, since it uses less digits than its factorization.

55209662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27604833.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 55209662 is about 7430.3204506939. The cubic root of 55209662 is about 380.7778664415. Note that the first 3 decimals are identical.

The spelling of 55209662 in words is "fifty-five million, two hundred nine thousand, six hundred sixty-two".