1525161 has 16 divisors (see below), whose sum is σ = 2243520. Its totient is φ = 913920.

The previous prime is 1525157. The next prime is 1525163. The reversal of 1525161 is 1615251.

It is not a de Polignac number, because 1525161 - 2² = 1525157 is a prime.

It is a super-2 number, since 2×1525161² = 4652232151842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1525163) by changing a digit.

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, 3525 + ... + 3933.

It is an arithmetic number, because the mean of its divisors is an integer number (140220).

2^1525161 is an apocalyptic number.

1525161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1525161 is a deficient number, since it is larger than the sum of its proper divisors (718359).

1525161 is a wasteful number, since it uses less digits than its factorization.

1525161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its digits is 300, while the sum is 21.

The square root of 1525161 is about 1234.9740887970. The cubic root of 1525161 is about 115.1079264057.

The spelling of 1525161 in words is "one million, five hundred twenty-five thousand, one hundred sixty-one".