1051521 has 8 divisors (see below), whose sum is σ = 1408320. Its totient is φ = 697872.

The previous prime is 1051507. The next prime is 1051543. The reversal of 1051521 is 1251501.

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

It is not a de Polignac number, because 1051521 - 2⁹ = 1051009 is a prime.

It is a super-2 number, since 2×1051521² = 2211392826882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1051521.

It is not an unprimeable number, because it can be changed into a prime (1051571) 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, 156 + ... + 1458.

It is an arithmetic number, because the mean of its divisors is an integer number (176040).

2^1051521 is an apocalyptic number.

It is an amenable number.

1051521 is a deficient number, since it is larger than the sum of its proper divisors (356799).

1051521 is a wasteful number, since it uses less digits than its factorization.

1051521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1051521 is about 1025.4369800236. The cubic root of 1051521 is about 101.6886894272.

The spelling of 1051521 in words is "one million, fifty-one thousand, five hundred twenty-one".