55349131 has 4 divisors (see below), whose sum is σ = 56016072. Its totient is φ = 54682192.

The previous prime is 55349117. The next prime is 55349137. The reversal of 55349131 is 13194355.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55349131 - 2⁹ = 55348619 is a prime.

It is a super-2 number, since 2×55349131² = 6127052604910322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55349093 and 55349102.

It is not an unprimeable number, because it can be changed into a prime (55349137) 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, 333346 + ... + 333511.

It is an arithmetic number, because the mean of its divisors is an integer number (14004018).

Almost surely, 2^55349131 is an apocalyptic number.

55349131 is a deficient number, since it is larger than the sum of its proper divisors (666941).

55349131 is an equidigital number, since it uses as much as digits as its factorization.

55349131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666940.

The product of its digits is 8100, while the sum is 31.

The square root of 55349131 is about 7439.6996579163. The cubic root of 55349131 is about 381.0982333853.

The spelling of 55349131 in words is "fifty-five million, three hundred forty-nine thousand, one hundred thirty-one".