55861654 has 4 divisors (see below), whose sum is σ = 83792484. Its totient is φ = 27930826.

The previous prime is 55861649. The next prime is 55861657. The reversal of 55861654 is 45616855.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55861657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13965412 + ... + 13965415.

It is an arithmetic number, because the mean of its divisors is an integer number (20948121).

Almost surely, 2^55861654 is an apocalyptic number.

55861654 is a deficient number, since it is larger than the sum of its proper divisors (27930830).

55861654 is a wasteful number, since it uses less digits than its factorization.

55861654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27930829.

The product of its digits is 144000, while the sum is 40.

The square root of 55861654 is about 7474.0654265266. The cubic root of 55861654 is about 382.2709215424.

The spelling of 55861654 in words is "fifty-five million, eight hundred sixty-one thousand, six hundred fifty-four".