5401521 has 6 divisors (see below), whose sum is σ = 7802210. Its totient is φ = 3601008.

The previous prime is 5401507. The next prime is 5401553. The reversal of 5401521 is 1251045.

It can be written as a sum of positive squares in only one way, i.e., 3370896 + 2030625 = 1836^2 + 1425^2 .

It is not a de Polignac number, because 5401521 - 2¹¹ = 5399473 is a prime.

It is a super-2 number, since 2×5401521² = 58352858226882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5401494 and 5401503.

It is not an unprimeable number, because it can be changed into a prime (5402521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300076 + ... + 300093.

Almost surely, 2^5401521 is an apocalyptic number.

It is an amenable number.

5401521 is a deficient number, since it is larger than the sum of its proper divisors (2400689).

5401521 is a wasteful number, since it uses less digits than its factorization.

5401521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600175 (or 600172 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 5401521 is about 2324.1172517754. The cubic root of 5401521 is about 175.4575347131.

Adding to 5401521 its reverse (1251045), we get a palindrome (6652566).

The spelling of 5401521 in words is "five million, four hundred one thousand, five hundred twenty-one".