5457661 has 8 divisors (see below), whose sum is σ = 6012864. Its totient is φ = 4912320.

The previous prime is 5457659. The next prime is 5457667. The reversal of 5457661 is 1667545.

It is a happy number.

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 5457661 - 2¹ = 5457659 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5457667) 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, 1276 + ... + 3541.

It is an arithmetic number, because the mean of its divisors is an integer number (751608).

Almost surely, 2^5457661 is an apocalyptic number.

It is an amenable number.

5457661 is a deficient number, since it is larger than the sum of its proper divisors (555203).

5457661 is a wasteful number, since it uses less digits than its factorization.

5457661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931.

The product of its digits is 25200, while the sum is 34.

The square root of 5457661 is about 2336.1637357000. The cubic root of 5457661 is about 176.0633058251.

The spelling of 5457661 in words is "five million, four hundred fifty-seven thousand, six hundred sixty-one".