55490149 has 16 divisors (see below), whose sum is σ = 66306240. Its totient is φ = 45768960.

The previous prime is 55490131. The next prime is 55490173. The reversal of 55490149 is 94109455.

It is a cyclic number.

It is not a de Polignac number, because 55490149 - 2¹⁷ = 55359077 is a prime.

It is a super-3 number, since 3×55490149³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55490549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5149 + ... + 11725.

It is an arithmetic number, because the mean of its divisors is an integer number (4144140).

Almost surely, 2^55490149 is an apocalyptic number.

55490149 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

55490149 is a deficient number, since it is larger than the sum of its proper divisors (10816091).

55490149 is a wasteful number, since it uses less digits than its factorization.

55490149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 55490149 is about 7449.1710277050. The cubic root of 55490149 is about 381.4216117493.

The spelling of 55490149 in words is "fifty-five million, four hundred ninety thousand, one hundred forty-nine".