33457481 has 4 divisors (see below), whose sum is σ = 33472464. Its totient is φ = 33442500.

The previous prime is 33457471. The next prime is 33457493. The reversal of 33457481 is 18475433.

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: 18475433 = 3251 ⋅5683.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33457481 is a prime.

It is a super-2 number, since 2×33457481² = 2238806069730722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33457471) 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, 3395 + ... + 8856.

It is an arithmetic number, because the mean of its divisors is an integer number (8368116).

Almost surely, 2^33457481 is an apocalyptic number.

It is an amenable number.

33457481 is a deficient number, since it is larger than the sum of its proper divisors (14983).

33457481 is a wasteful number, since it uses less digits than its factorization.

33457481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14982.

The product of its digits is 40320, while the sum is 35.

The square root of 33457481 is about 5784.2442030053. The cubic root of 33457481 is about 322.2288440485.

The spelling of 33457481 in words is "thirty-three million, four hundred fifty-seven thousand, four hundred eighty-one".