61401433 has 4 divisors (see below), whose sum is σ = 65013300. Its totient is φ = 57789568.

The previous prime is 61401427. The next prime is 61401449. The reversal of 61401433 is 33410416.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57108249 + 4293184 = 7557^2 + 2072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61401433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61401533) 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, 1805908 + ... + 1805941.

It is an arithmetic number, because the mean of its divisors is an integer number (16253325).

Almost surely, 2^61401433 is an apocalyptic number.

It is an amenable number.

61401433 is a deficient number, since it is larger than the sum of its proper divisors (3611867).

61401433 is a wasteful number, since it uses less digits than its factorization.

61401433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611866.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 61401433 is about 7835.9066482443. The cubic root of 61401433 is about 394.5113500268.

Adding to 61401433 its reverse (33410416), we get a palindrome (94811849).

The spelling of 61401433 in words is "sixty-one million, four hundred one thousand, four hundred thirty-three".