75222437 has 4 divisors (see below), whose sum is σ = 76971840. Its totient is φ = 73473036.

The previous prime is 75222431. The next prime is 75222439. The reversal of 75222437 is 73422257.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73422257 = 1129 ⋅65033.

It is a cyclic number.

It is not a de Polignac number, because 75222437 - 2⁴ = 75222421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75222431) 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, 874637 + ... + 874722.

It is an arithmetic number, because the mean of its divisors is an integer number (19242960).

Almost surely, 2^75222437 is an apocalyptic number.

It is an amenable number.

75222437 is a deficient number, since it is larger than the sum of its proper divisors (1749403).

75222437 is a wasteful number, since it uses less digits than its factorization.

75222437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749402.

The product of its digits is 23520, while the sum is 32.

The square root of 75222437 is about 8673.0869360338. The cubic root of 75222437 is about 422.1328336803.

The spelling of 75222437 in words is "seventy-five million, two hundred twenty-two thousand, four hundred thirty-seven".