75610421 has 2 divisors, whose sum is σ = 75610422. Its totient is φ = 75610420.

The previous prime is 75610417. The next prime is 75610429. The reversal of 75610421 is 12401657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75603025 + 7396 = 8695^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 75610421 - 2² = 75610417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75610429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37805210 + 37805211.

It is an arithmetic number, because the mean of its divisors is an integer number (37805211).

Almost surely, 2^75610421 is an apocalyptic number.

It is an amenable number.

75610421 is a deficient number, since it is larger than the sum of its proper divisors (1).

75610421 is an equidigital number, since it uses as much as digits as its factorization.

75610421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 75610421 is about 8695.4252914967. The cubic root of 75610421 is about 422.8573515763.

The spelling of 75610421 in words is "seventy-five million, six hundred ten thousand, four hundred twenty-one".