61409052 has 18 divisors (see below), whose sum is σ = 155228528. Its totient is φ = 20469672.

The previous prime is 61409041. The next prime is 61409069. The reversal of 61409052 is 25090416.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852868 + ... + 852939.

Almost surely, 2^61409052 is an apocalyptic number.

It is an amenable number.

61409052 is an abundant number, since it is smaller than the sum of its proper divisors (93819476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61409052 is a wasteful number, since it uses less digits than its factorization.

61409052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705817 (or 1705812 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 61409052 is about 7836.3927926055. The cubic root of 61409052 is about 394.5276670057.

Adding to 61409052 its reverse (25090416), we get a palindrome (86499468).

The spelling of 61409052 in words is "sixty-one million, four hundred nine thousand, fifty-two".