538151421 has 32 divisors (see below), whose sum is σ = 783164800. Its totient is φ = 327525120.

The previous prime is 538151381. The next prime is 538151429. The reversal of 538151421 is 124151835.

It is not a de Polignac number, because 538151421 - 2⁷ = 538151293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538151429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228711 + ... + 231051.

It is an arithmetic number, because the mean of its divisors is an integer number (24473900).

Almost surely, 2^538151421 is an apocalyptic number.

It is an amenable number.

538151421 is a deficient number, since it is larger than the sum of its proper divisors (245013379).

538151421 is a wasteful number, since it uses less digits than its factorization.

538151421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509.

The product of its digits is 4800, while the sum is 30.

The square root of 538151421 is about 23198.0908912781. The cubic root of 538151421 is about 813.3949975456.

The spelling of 538151421 in words is "five hundred thirty-eight million, one hundred fifty-one thousand, four hundred twenty-one".