55297145 has 8 divisors (see below), whose sum is σ = 67768704. Its totient is φ = 43296304.

The previous prime is 55297139. The next prime is 55297159. The reversal of 55297145 is 54179255.

It is a happy number.

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 55297145 - 2²² = 51102841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55297099 and 55297108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117419 + ... + 117888.

It is an arithmetic number, because the mean of its divisors is an integer number (8471088).

Almost surely, 2^55297145 is an apocalyptic number.

It is an amenable number.

55297145 is a deficient number, since it is larger than the sum of its proper divisors (12471559).

55297145 is a wasteful number, since it uses less digits than its factorization.

55297145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235359.

The product of its digits is 63000, while the sum is 38.

The square root of 55297145 is about 7436.2050133116. The cubic root of 55297145 is about 380.9788820465.

The spelling of 55297145 in words is "fifty-five million, two hundred ninety-seven thousand, one hundred forty-five".