55770746 has 4 divisors (see below), whose sum is σ = 83656122. Its totient is φ = 27885372.

The previous prime is 55770731. The next prime is 55770749. The reversal of 55770746 is 64707755.

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

It can be written as a sum of positive squares in only one way, i.e., 55726225 + 44521 = 7465^2 + 211^2 .

It is a super-2 number, since 2×55770746² = 6220752218793032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55770749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13942685 + ... + 13942688.

Almost surely, 2^55770746 is an apocalyptic number.

55770746 is a deficient number, since it is larger than the sum of its proper divisors (27885376).

55770746 is a wasteful number, since it uses less digits than its factorization.

55770746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27885375.

The product of its (nonzero) digits is 205800, while the sum is 41.

The square root of 55770746 is about 7467.9813872291. The cubic root of 55770746 is about 382.0634425846.

The spelling of 55770746 in words is "fifty-five million, seven hundred seventy thousand, seven hundred forty-six".