55130007 has 4 divisors (see below), whose sum is σ = 73506680. Its totient is φ = 36753336.

The previous prime is 55130003. The next prime is 55130051. The reversal of 55130007 is 70003155.

It is a happy number.

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

It is not a de Polignac number, because 55130007 - 2² = 55130003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55130003) 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, 9188332 + ... + 9188337.

It is an arithmetic number, because the mean of its divisors is an integer number (18376670).

Almost surely, 2^55130007 is an apocalyptic number.

55130007 is a deficient number, since it is larger than the sum of its proper divisors (18376673).

55130007 is a wasteful number, since it uses less digits than its factorization.

55130007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18376672.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 55130007 is about 7424.9583837218. The cubic root of 55130007 is about 380.5946529821.

The spelling of 55130007 in words is "fifty-five million, one hundred thirty thousand, seven".