2051545 has 8 divisors (see below), whose sum is σ = 2496960. Its totient is φ = 1617840.

The previous prime is 2051537. The next prime is 2051587. The reversal of 2051545 is 5451502.

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

It is not a de Polignac number, because 2051545 - 2³ = 2051537 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2535 + ... + 3244.

It is an arithmetic number, because the mean of its divisors is an integer number (312120).

2^2051545 is an apocalyptic number.

It is an amenable number.

2051545 is a deficient number, since it is larger than the sum of its proper divisors (445415).

2051545 is an equidigital number, since it uses as much as digits as its factorization.

2051545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5855.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 2051545 is about 1432.3215421127. The cubic root of 2051545 is about 127.0653145345.

The spelling of 2051545 in words is "two million, fifty-one thousand, five hundred forty-five".