75422657 has 16 divisors (see below), whose sum is σ = 80151120. Its totient is φ = 70886400.

The previous prime is 75422629. The next prime is 75422689. The reversal of 75422657 is 75622457.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 27867841 + 47554816 = 5279^2 + 6896^2 .

It is a cyclic number.

It is not a de Polignac number, because 75422657 - 2⁶ = 75422593 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 75422657.

It is not an unprimeable number, because it can be changed into a prime (75422617) 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, 132269 + ... + 132837.

It is an arithmetic number, because the mean of its divisors is an integer number (5009445).

Almost surely, 2^75422657 is an apocalyptic number.

It is an amenable number.

75422657 is a deficient number, since it is larger than the sum of its proper divisors (4728463).

75422657 is a wasteful number, since it uses less digits than its factorization.

75422657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its digits is 117600, while the sum is 38.

The square root of 75422657 is about 8684.6218685675. The cubic root of 75422657 is about 422.5070330167.

The spelling of 75422657 in words is "seventy-five million, four hundred twenty-two thousand, six hundred fifty-seven".