7472521226 has 4 divisors (see below), whose sum is σ = 11208781842. Its totient is φ = 3736260612.

The previous prime is 7472521193. The next prime is 7472521249. The reversal of 7472521226 is 6221252747.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 4342678201 + 3129843025 = 65899^2 + 55945^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7472521226.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1868130305 + ... + 1868130308.

Almost surely, 2^7472521226 is an apocalyptic number.

7472521226 is a deficient number, since it is larger than the sum of its proper divisors (3736260616).

7472521226 is a wasteful number, since it uses less digits than its factorization.

7472521226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736260615.

The product of its digits is 94080, while the sum is 38.

The square root of 7472521226 is about 86443.7460201720. The cubic root of 7472521226 is about 1955.0403225571.

It can be divided in two parts, 7472521 and 226, that added together give a palindrome (7472747).

The spelling of 7472521226 in words is "seven billion, four hundred seventy-two million, five hundred twenty-one thousand, two hundred twenty-six".