55535149 has 4 divisors (see below), whose sum is σ = 56583036. Its totient is φ = 54487264.

The previous prime is 55535147. The next prime is 55535177. The reversal of 55535149 is 94153555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94153555 = 5 ⋅18830711.

It can be written as a sum of positive squares in 2 ways, for example, as 42445225 + 13089924 = 6515^2 + 3618^2 .

It is a cyclic number.

It is not a de Polignac number, because 55535149 - 2¹ = 55535147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55535143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523864 + ... + 523969.

It is an arithmetic number, because the mean of its divisors is an integer number (14145759).

Almost surely, 2^55535149 is an apocalyptic number.

It is an amenable number.

55535149 is a deficient number, since it is larger than the sum of its proper divisors (1047887).

55535149 is a wasteful number, since it uses less digits than its factorization.

55535149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047886.

The product of its digits is 67500, while the sum is 37.

The square root of 55535149 is about 7452.1908859073. The cubic root of 55535149 is about 381.5246891134.

The spelling of 55535149 in words is "fifty-five million, five hundred thirty-five thousand, one hundred forty-nine".