61456533 has 4 divisors (see below), whose sum is σ = 81942048. Its totient is φ = 40971020.

The previous prime is 61456531. The next prime is 61456537. The reversal of 61456533 is 33565416.

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.

It is a cyclic number.

It is not a de Polignac number, because 61456533 - 2¹ = 61456531 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61456494 and 61456503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61456531) 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, 10242753 + ... + 10242758.

It is an arithmetic number, because the mean of its divisors is an integer number (20485512).

Almost surely, 2^61456533 is an apocalyptic number.

It is an amenable number.

61456533 is a deficient number, since it is larger than the sum of its proper divisors (20485515).

61456533 is a wasteful number, since it uses less digits than its factorization.

61456533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20485514.

The product of its digits is 32400, while the sum is 33.

The square root of 61456533 is about 7839.4217261224. The cubic root of 61456533 is about 394.6293227153.

The spelling of 61456533 in words is "sixty-one million, four hundred fifty-six thousand, five hundred thirty-three".