30561469 has 4 divisors (see below), whose sum is σ = 31079520. Its totient is φ = 30043420.

The previous prime is 30561467. The next prime is 30561473. The reversal of 30561469 is 96416503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30561469 - 2¹ = 30561467 is a prime.

It is a super-2 number, since 2×30561469² = 1868006774875922, which 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 (30561467) 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, 258937 + ... + 259054.

It is an arithmetic number, because the mean of its divisors is an integer number (7769880).

Almost surely, 2^30561469 is an apocalyptic number.

It is an amenable number.

30561469 is a deficient number, since it is larger than the sum of its proper divisors (518051).

30561469 is an equidigital number, since it uses as much as digits as its factorization.

30561469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518050.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 30561469 is about 5528.2428492243. The cubic root of 30561469 is about 312.6497424223.

The spelling of 30561469 in words is "thirty million, five hundred sixty-one thousand, four hundred sixty-nine".