61434511 has 4 divisors (see below), whose sum is σ = 62351512. Its totient is φ = 60517512.

The previous prime is 61434497. The next prime is 61434539. The reversal of 61434511 is 11543416.

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

It is a cyclic number.

It is not a de Polignac number, because 61434511 - 2⁵ = 61434479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61431511) 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, 458400 + ... + 458533.

It is an arithmetic number, because the mean of its divisors is an integer number (15587878).

Almost surely, 2^61434511 is an apocalyptic number.

61434511 is a deficient number, since it is larger than the sum of its proper divisors (917001).

61434511 is an equidigital number, since it uses as much as digits as its factorization.

61434511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917000.

The product of its digits is 1440, while the sum is 25.

The square root of 61434511 is about 7838.0170323877. The cubic root of 61434511 is about 394.5821806418.

Adding to 61434511 its reverse (11543416), we get a palindrome (72977927).

The spelling of 61434511 in words is "sixty-one million, four hundred thirty-four thousand, five hundred eleven".