1105620551 has 32 divisors (see below), whose sum is σ = 1367591040. Its totient is φ = 872349696.

The previous prime is 1105620541. The next prime is 1105620577. The reversal of 1105620551 is 1550265011.

It is a de Polignac number, because none of the positive numbers 2^k-1105620551 is a prime.

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 1105620551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105620521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1189655 + ... + 1190583.

It is an arithmetic number, because the mean of its divisors is an integer number (42737220).

Almost surely, 2^1105620551 is an apocalyptic number.

1105620551 is a deficient number, since it is larger than the sum of its proper divisors (261970489).

1105620551 is a wasteful number, since it uses less digits than its factorization.

1105620551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 1105620551 is about 33250.8729359095. The cubic root of 1105620551 is about 1034.0353060836.

Adding to 1105620551 its reverse (1550265011), we get a palindrome (2655885562).

The spelling of 1105620551 in words is "one billion, one hundred five million, six hundred twenty thousand, five hundred fifty-one".