551572541 has 4 divisors (see below), whose sum is σ = 594001212. Its totient is φ = 509143872.

The previous prime is 551572529. The next prime is 551572559. The reversal of 551572541 is 145275155.

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 306775225 + 244797316 = 17515^2 + 15646^2 .

It is a cyclic number.

It is not a de Polignac number, because 551572541 - 2⁶ = 551572477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551572561) 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, 21214316 + ... + 21214341.

It is an arithmetic number, because the mean of its divisors is an integer number (148500303).

Almost surely, 2^551572541 is an apocalyptic number.

It is an amenable number.

551572541 is a deficient number, since it is larger than the sum of its proper divisors (42428671).

551572541 is a wasteful number, since it uses less digits than its factorization.

551572541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42428670.

The product of its digits is 35000, while the sum is 35.

The square root of 551572541 is about 23485.5815554991. The cubic root of 551572541 is about 820.1013859371.

The spelling of 551572541 in words is "five hundred fifty-one million, five hundred seventy-two thousand, five hundred forty-one".