1561410 has 32 divisors (see below), whose sum is σ = 4164480. Its totient is φ = 416304.

The previous prime is 1561393. The next prime is 1561421. The reversal of 1561410 is 141651.

It is a super-3 number, since 3×1561410³ = 11420158305333663000, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2622 + ... + 3161.

It is an arithmetic number, because the mean of its divisors is an integer number (130140).

2^1561410 is an apocalyptic number.

1561410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1561410 is an abundant number, since it is smaller than the sum of its proper divisors (2603070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1561410 is a wasteful number, since it uses less digits than its factorization.

1561410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5799 (or 5793 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1561410 is about 1249.5639239351. The cubic root of 1561410 is about 116.0127314603.

It can be divided in two parts, 15 and 61410, that added together give a triangular number (61425 = T₃₅₀).

The spelling of 1561410 in words is "one million, five hundred sixty-one thousand, four hundred ten".