55445304531 has 16 divisors (see below), whose sum is σ = 74215221408. Its totient is φ = 36819552000.

The previous prime is 55445304503. The next prime is 55445304533. The reversal of 55445304531 is 13540354455.

It is a happy number.

55445304531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55445304531 - 2¹¹ = 55445302483 is a prime.

It is a super-2 number, since 2×55445304531² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55445304531.

It is not an unprimeable number, because it can be changed into a prime (55445304533) 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, 2955481 + ... + 2974181.

It is an arithmetic number, because the mean of its divisors is an integer number (4638451338).

Almost surely, 2^55445304531 is an apocalyptic number.

55445304531 is a deficient number, since it is larger than the sum of its proper divisors (18769916877).

55445304531 is a wasteful number, since it uses less digits than its factorization.

55445304531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22502.

The product of its (nonzero) digits is 360000, while the sum is 39.

Adding to 55445304531 its reverse (13540354455), we get a palindrome (68985658986).

It can be divided in two parts, 55445 and 304531, that added together give a triangular number (359976 = T₈₄₈).

The spelling of 55445304531 in words is "fifty-five billion, four hundred forty-five million, three hundred four thousand, five hundred thirty-one".