55148969 has 16 divisors (see below), whose sum is σ = 60673536. Its totient is φ = 49900800.

The previous prime is 55148953. The next prime is 55148971. The reversal of 55148969 is 96984155.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55148969 - 2⁴ = 55148953 is a prime.

It is a super-2 number, since 2×55148969² = 6082817563525922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55148869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119399 + ... + 119859.

It is an arithmetic number, because the mean of its divisors is an integer number (3792096).

Almost surely, 2^55148969 is an apocalyptic number.

It is an amenable number.

55148969 is a deficient number, since it is larger than the sum of its proper divisors (5524567).

55148969 is a wasteful number, since it uses less digits than its factorization.

55148969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736.

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

The square root of 55148969 is about 7426.2351834560. The cubic root of 55148969 is about 380.6382832357.

The spelling of 55148969 in words is "fifty-five million, one hundred forty-eight thousand, nine hundred sixty-nine".