55891946 has 16 divisors (see below), whose sum is σ = 94411008. Its totient is φ = 24585600.

The previous prime is 55891943. The next prime is 55891949. The reversal of 55891946 is 64919855.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55891943) and next prime (55891949).

It is a self number, because there is not a number n which added to its sum of digits gives 55891946.

It is not an unprimeable number, because it can be changed into a prime (55891943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40295 + ... + 41658.

It is an arithmetic number, because the mean of its divisors is an integer number (5900688).

Almost surely, 2^55891946 is an apocalyptic number.

55891946 is a deficient number, since it is larger than the sum of its proper divisors (38519062).

55891946 is a wasteful number, since it uses less digits than its factorization.

55891946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81997.

The product of its digits is 388800, while the sum is 47.

The square root of 55891946 is about 7476.0916259768. The cubic root of 55891946 is about 382.3400068478.

The spelling of 55891946 in words is "fifty-five million, eight hundred ninety-one thousand, nine hundred forty-six".