1521061 has 4 divisors (see below), whose sum is σ = 1553472. Its totient is φ = 1488652.

The previous prime is 1521049. The next prime is 1521067. The reversal of 1521061 is 1601251.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1601251 = 79 ⋅20269.

It is a cyclic number.

It is not a de Polignac number, because 1521061 - 2⁵ = 1521029 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 (1521067) 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, 16135 + ... + 16228.

It is an arithmetic number, because the mean of its divisors is an integer number (388368).

2^1521061 is an apocalyptic number.

It is an amenable number.

1521061 is a deficient number, since it is larger than the sum of its proper divisors (32411).

1521061 is an equidigital number, since it uses as much as digits as its factorization.

1521061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32410.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1521061 is about 1233.3130178507. The cubic root of 1521061 is about 115.0046878996.

The spelling of 1521061 in words is "one million, five hundred twenty-one thousand, sixty-one".