75402274 has 4 divisors (see below), whose sum is σ = 113103414. Its totient is φ = 37701136.

The previous prime is 75402251. The next prime is 75402277. The reversal of 75402274 is 47220457.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47220457 = 353 ⋅133769.

It can be written as a sum of positive squares in only one way, i.e., 70308225 + 5094049 = 8385^2 + 2257^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (75402277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18850567 + ... + 18850570.

Almost surely, 2^75402274 is an apocalyptic number.

75402274 is a deficient number, since it is larger than the sum of its proper divisors (37701140).

75402274 is a wasteful number, since it uses less digits than its factorization.

75402274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37701139.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 75402274 is about 8683.4482781899. The cubic root of 75402274 is about 422.4689686953.

The spelling of 75402274 in words is "seventy-five million, four hundred two thousand, two hundred seventy-four".