61421433 has 32 divisors (see below), whose sum is σ = 89303040. Its totient is φ = 37425600.

The previous prime is 61421413. The next prime is 61421441. The reversal of 61421433 is 33412416.

It is not a de Polignac number, because 61421433 - 2⁹ = 61420921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61421413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270466 + ... + 270692.

It is an arithmetic number, because the mean of its divisors is an integer number (2790720).

Almost surely, 2^61421433 is an apocalyptic number.

It is an amenable number.

61421433 is a deficient number, since it is larger than the sum of its proper divisors (27881607).

61421433 is a wasteful number, since it uses less digits than its factorization.

61421433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its digits is 1728, while the sum is 24.

The square root of 61421433 is about 7837.1827208507. The cubic root of 61421433 is about 394.5541794858.

Adding to 61421433 its reverse (33412416), we get a palindrome (94833849).

The spelling of 61421433 in words is "sixty-one million, four hundred twenty-one thousand, four hundred thirty-three".