7499805455 has 4 divisors (see below), whose sum is σ = 8999766552. Its totient is φ = 5999844360.

The previous prime is 7499805451. The next prime is 7499805461. The reversal of 7499805455 is 5545089947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5545089947 = 359 ⋅15445933.

It is not a de Polignac number, because 7499805455 - 2² = 7499805451 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 7499805455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7499805451) 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, 749980541 + ... + 749980550.

It is an arithmetic number, because the mean of its divisors is an integer number (2249941638).

Almost surely, 2^7499805455 is an apocalyptic number.

7499805455 is a deficient number, since it is larger than the sum of its proper divisors (1499961097).

7499805455 is a wasteful number, since it uses less digits than its factorization.

7499805455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499961096.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The square root of 7499805455 is about 86601.4171650788. The cubic root of 7499805455 is about 1957.4168955953.

The spelling of 7499805455 in words is "seven billion, four hundred ninety-nine million, eight hundred five thousand, four hundred fifty-five".