3951545 has 8 divisors (see below), whose sum is σ = 5106696. Its totient is φ = 2918016.

The previous prime is 3951517. The next prime is 3951551. The reversal of 3951545 is 5451593.

It can be written as a sum of positive squares in 4 ways, for example, as 222784 + 3728761 = 472^2 + 1931^2 .

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 3951545 - 2⁶ = 3951481 is a prime.

It is a super-2 number, since 2×3951545² = 31229415774050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30332 + ... + 30461.

It is an arithmetic number, because the mean of its divisors is an integer number (638337).

Almost surely, 2^3951545 is an apocalyptic number.

It is an amenable number.

3951545 is a deficient number, since it is larger than the sum of its proper divisors (1155151).

3951545 is a wasteful number, since it uses less digits than its factorization.

3951545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60811.

The product of its digits is 13500, while the sum is 32.

The square root of 3951545 is about 1987.8493403676. The cubic root of 3951545 is about 158.0965200990.

The spelling of 3951545 in words is "three million, nine hundred fifty-one thousand, five hundred forty-five".