55790147 has 4 divisors (see below), whose sum is σ = 63760176. Its totient is φ = 47820120.

The previous prime is 55790131. The next prime is 55790153. The reversal of 55790147 is 74109755.

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 55790147 - 2⁴ = 55790131 is a prime.

It is a super-2 number, since 2×55790147² = 6225081004563218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55790147.

It is not an unprimeable number, because it can be changed into a prime (55790197) 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, 3985004 + ... + 3985017.

It is an arithmetic number, because the mean of its divisors is an integer number (15940044).

Almost surely, 2^55790147 is an apocalyptic number.

55790147 is a deficient number, since it is larger than the sum of its proper divisors (7970029).

55790147 is an equidigital number, since it uses as much as digits as its factorization.

55790147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7970028.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 55790147 is about 7469.2802196731. The cubic root of 55790147 is about 382.1077403215.

The spelling of 55790147 in words is "fifty-five million, seven hundred ninety thousand, one hundred forty-seven".