55770043 has 16 divisors (see below), whose sum is σ = 65194240. Its totient is φ = 46720800.

The previous prime is 55770031. The next prime is 55770049. The reversal of 55770043 is 34007755.

It is not a de Polignac number, because 55770043 - 2⁹ = 55769531 is a prime.

It is a super-2 number, since 2×55770043² = 6220595392443698, 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 = 55769987 and 55770014.

It is not an unprimeable number, because it can be changed into a prime (55770049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89788 + ... + 90406.

It is an arithmetic number, because the mean of its divisors is an integer number (4074640).

Almost surely, 2^55770043 is an apocalyptic number.

55770043 is a deficient number, since it is larger than the sum of its proper divisors (9424197).

55770043 is a wasteful number, since it uses less digits than its factorization.

55770043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 55770043 is about 7467.9343194755. The cubic root of 55770043 is about 382.0618372524.

Adding to 55770043 its reverse (34007755), we get a palindrome (89777798).

The spelling of 55770043 in words is "fifty-five million, seven hundred seventy thousand, forty-three".