561401027 has 8 divisors (see below), whose sum is σ = 612930240. Its totient is φ = 509953960.

The previous prime is 561401021. The next prime is 561401033. The reversal of 561401027 is 720104165.

It is an interprime number because it is at equal distance from previous prime (561401021) and next prime (561401033).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561401027 - 2⁴ = 561401011 is a prime.

It is a super-2 number, since 2×561401027² = 630342226233309458, 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 = 561400987 and 561401005.

It is not an unprimeable number, because it can be changed into a prime (561401021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5777 + ... + 34002.

It is an arithmetic number, because the mean of its divisors is an integer number (76616280).

Almost surely, 2^561401027 is an apocalyptic number.

561401027 is a deficient number, since it is larger than the sum of its proper divisors (51529213).

561401027 is a wasteful number, since it uses less digits than its factorization.

561401027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41073.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 561401027 is about 23693.9027388904. The cubic root of 561401027 is about 824.9438722758.

The spelling of 561401027 in words is "five hundred sixty-one million, four hundred one thousand, twenty-seven".