901539601 has 2 divisors, whose sum is σ = 901539602. Its totient is φ = 901539600.

The previous prime is 901539581. The next prime is 901539641. The reversal of 901539601 is 106935109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837523600 + 64016001 = 28940^2 + 8001^2 .

It is a cyclic number.

It is not a de Polignac number, because 901539601 - 2¹³ = 901531409 is a prime.

It is equal to p_46084093 and since 901539601 and 46084093 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (901539641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450769800 + 450769801.

It is an arithmetic number, because the mean of its divisors is an integer number (450769801).

Almost surely, 2^901539601 is an apocalyptic number.

It is an amenable number.

901539601 is a deficient number, since it is larger than the sum of its proper divisors (1).

901539601 is an equidigital number, since it uses as much as digits as its factorization.

901539601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 901539601 is about 30025.6490521021. The cubic root of 901539601 is about 966.0396148311.

The spelling of 901539601 in words is "nine hundred one million, five hundred thirty-nine thousand, six hundred one".