501438151 has 2 divisors, whose sum is σ = 501438152. Its totient is φ = 501438150.

The previous prime is 501438131. The next prime is 501438173. The reversal of 501438151 is 151834105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 501438151 - 2²¹ = 499340999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501438131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250719075 + 250719076.

It is an arithmetic number, because the mean of its divisors is an integer number (250719076).

Almost surely, 2^501438151 is an apocalyptic number.

501438151 is a deficient number, since it is larger than the sum of its proper divisors (1).

501438151 is an equidigital number, since it uses as much as digits as its factorization.

501438151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 501438151 is about 22392.8147181188. The cubic root of 501438151 is about 794.4607716873.

The spelling of 501438151 in words is "five hundred one million, four hundred thirty-eight thousand, one hundred fifty-one".