42550357 has 2 divisors, whose sum is σ = 42550358. Its totient is φ = 42550356.

The previous prime is 42550351. The next prime is 42550363. The reversal of 42550357 is 75305524.

It is a balanced prime because it is at equal distance from previous prime (42550351) and next prime (42550363).

It can be written as a sum of positive squares in only one way, i.e., 32558436 + 9991921 = 5706^2 + 3161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42550357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42550351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21275178 + 21275179.

It is an arithmetic number, because the mean of its divisors is an integer number (21275179).

Almost surely, 2^42550357 is an apocalyptic number.

It is an amenable number.

42550357 is a deficient number, since it is larger than the sum of its proper divisors (1).

42550357 is an equidigital number, since it uses as much as digits as its factorization.

42550357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 42550357 is about 6523.0634674208. The cubic root of 42550357 is about 349.1143786481.

The spelling of 42550357 in words is "forty-two million, five hundred fifty thousand, three hundred fifty-seven".