55445715 has 40 divisors (see below), whose sum is σ = 107047248. Its totient is φ = 27293760.

The previous prime is 55445713. The next prime is 55445717. The reversal of 55445715 is 51754455.

55445715 is nontrivially palindromic in base 8.

55445715 is a nontrivial binomial coefficient, being equal to C(10531, 2).

It is an interprime number because it is at equal distance from previous prime (55445713) and next prime (55445717).

It is not a de Polignac number, because 55445715 - 2¹ = 55445713 is a prime.

It is a super-2 number, since 2×55445715² = 6148454623722450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55445715.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55445713) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1 + ... + 10530.

Almost surely, 2^55445715 is an apocalyptic number.

55445715 is the 10530-th triangular number.

55445715 is a deficient number, since it is larger than the sum of its proper divisors (51601533).

55445715 is a wasteful number, since it uses less digits than its factorization.

55445715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561 (or 10552 counting only the distinct ones).

The product of its digits is 70000, while the sum is 36.

The square root of 55445715 is about 7446.1879508914. The cubic root of 55445715 is about 381.3197761744.

The spelling of 55445715 in words is "fifty-five million, four hundred forty-five thousand, seven hundred fifteen".