54021125212501 has 4 divisors (see below), whose sum is σ = 54415439995212. Its totient is φ = 53626810429792.

The previous prime is 54021125212499. The next prime is 54021125212517. The reversal of 54021125212501 is 10521252112045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22161252965476 + 31859872247025 = 4707574^2 + 5644455^2 .

It is a cyclic number.

It is not a de Polignac number, because 54021125212501 - 2¹ = 54021125212499 is a prime.

It is a super-2 number, since 2×54021125212501² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54021125212541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197157391150 + ... + 197157391423.

It is an arithmetic number, because the mean of its divisors is an integer number (13603859998803).

Almost surely, 2^{54021125212501} is an apocalyptic number.

It is an amenable number.

54021125212501 is a deficient number, since it is larger than the sum of its proper divisors (394314782711).

54021125212501 is a wasteful number, since it uses less digits than its factorization.

54021125212501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394314782710.

The product of its (nonzero) digits is 8000, while the sum is 31.

Adding to 54021125212501 its reverse (10521252112045), we get a palindrome (64542377324546).

The spelling of 54021125212501 in words is "fifty-four trillion, twenty-one billion, one hundred twenty-five million, two hundred twelve thousand, five hundred one".