55425997 has 8 divisors (see below), whose sum is σ = 60531840. Its totient is φ = 50331360.

The previous prime is 55425977. The next prime is 55426009. The reversal of 55425997 is 79952455.

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 55425997 - 2¹⁵ = 55393229 is a prime.

It is a super-2 number, since 2×55425997² = 6144082286888018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55425947) 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 in 7 ways as a sum of consecutive naturals, for example, 10188 + ... + 14650.

It is an arithmetic number, because the mean of its divisors is an integer number (7566480).

Almost surely, 2^55425997 is an apocalyptic number.

It is an amenable number.

55425997 is a deficient number, since it is larger than the sum of its proper divisors (5105843).

55425997 is a wasteful number, since it uses less digits than its factorization.

55425997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603.

The product of its digits is 567000, while the sum is 46.

The square root of 55425997 is about 7444.8637999630. The cubic root of 55425997 is about 381.2745682636.

The spelling of 55425997 in words is "fifty-five million, four hundred twenty-five thousand, nine hundred ninety-seven".