55247770 has 8 divisors (see below), whose sum is σ = 99446004. Its totient is φ = 22099104.

The previous prime is 55247767. The next prime is 55247789. The reversal of 55247770 is 7774255.

It can be written as a sum of positive squares in 2 ways, for example, as 45306361 + 9941409 = 6731^2 + 3153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2762379 + ... + 2762398.

Almost surely, 2^55247770 is an apocalyptic number.

55247770 is a deficient number, since it is larger than the sum of its proper divisors (44198234).

55247770 is a wasteful number, since it uses less digits than its factorization.

55247770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5524784.

The product of its (nonzero) digits is 68600, while the sum is 37.

The square root of 55247770 is about 7432.8843661125. The cubic root of 55247770 is about 380.8654558541.

The spelling of 55247770 in words is "fifty-five million, two hundred forty-seven thousand, seven hundred seventy".