55490061 has 8 divisors (see below), whose sum is σ = 80712864. Its totient is φ = 33630320.

The previous prime is 55490041. The next prime is 55490063. The reversal of 55490061 is 16009455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55490061 - 2⁶ = 55489997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55490063) 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, 840726 + ... + 840791.

It is an arithmetic number, because the mean of its divisors is an integer number (10089108).

Almost surely, 2^55490061 is an apocalyptic number.

It is an amenable number.

55490061 is a deficient number, since it is larger than the sum of its proper divisors (25222803).

55490061 is a wasteful number, since it uses less digits than its factorization.

55490061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681531.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 55490061 is about 7449.1651210052. The cubic root of 55490061 is about 381.4214101212.

The spelling of 55490061 in words is "fifty-five million, four hundred ninety thousand, sixty-one".