525021541 has 6 divisors (see below), whose sum is σ = 577089926. Its totient is φ = 477292200.

The previous prime is 525021517. The next prime is 525021569. The reversal of 525021541 is 145120525.

It can be written as a sum of positive squares in only one way, i.e., 292581025 + 232440516 = 17105^2 + 15246^2 .

It is not a de Polignac number, because 525021541 - 2¹¹ = 525019493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525021941) 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, 2169390 + ... + 2169631.

Almost surely, 2^525021541 is an apocalyptic number.

It is an amenable number.

525021541 is a deficient number, since it is larger than the sum of its proper divisors (52068385).

525021541 is a wasteful number, since it uses less digits than its factorization.

525021541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4339043 (or 4339032 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 525021541 is about 22913.3485331149. The cubic root of 525021541 is about 806.7253561523.

The spelling of 525021541 in words is "five hundred twenty-five million, twenty-one thousand, five hundred forty-one".