75337421 has 12 divisors (see below), whose sum is σ = 80723412. Its totient is φ = 70066944.

The previous prime is 75337417. The next prime is 75337429. The reversal of 75337421 is 12473357.

It can be written as a sum of positive squares in 6 ways, for example, as 9954025 + 65383396 = 3155^2 + 8086^2 .

It is not a de Polignac number, because 75337421 - 2² = 75337417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75337429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201791 + ... + 202163.

It is an arithmetic number, because the mean of its divisors is an integer number (6726951).

Almost surely, 2^75337421 is an apocalyptic number.

It is an amenable number.

75337421 is a deficient number, since it is larger than the sum of its proper divisors (5385991).

75337421 is a wasteful number, since it uses less digits than its factorization.

75337421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 499 counting only the distinct ones).

The product of its digits is 17640, while the sum is 32.

The square root of 75337421 is about 8679.7131865056. The cubic root of 75337421 is about 422.3478130264.

The spelling of 75337421 in words is "seventy-five million, three hundred thirty-seven thousand, four hundred twenty-one".