111472609 has 2 divisors, whose sum is σ = 111472610. Its totient is φ = 111472608.

The previous prime is 111472597. The next prime is 111472619. The reversal of 111472609 is 906274111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99201600 + 12271009 = 9960^2 + 3503^2 .

It is a cyclic number.

It is not a de Polignac number, because 111472609 - 2⁵ = 111472577 is a prime.

It is a super-2 number, since 2×111472609² = 24852285114533762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111472619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55736304 + 55736305.

It is an arithmetic number, because the mean of its divisors is an integer number (55736305).

Almost surely, 2^111472609 is an apocalyptic number.

It is an amenable number.

111472609 is a deficient number, since it is larger than the sum of its proper divisors (1).

111472609 is an equidigital number, since it uses as much as digits as its factorization.

111472609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 111472609 is about 10558.0589598657. The cubic root of 111472609 is about 481.2706625412.

The spelling of 111472609 in words is "one hundred eleven million, four hundred seventy-two thousand, six hundred nine".