61052409 has 24 divisors (see below), whose sum is σ = 96531552. Its totient is φ = 36875520.

The previous prime is 61052371. The next prime is 61052417. The reversal of 61052409 is 90425016.

61052409 is a `hidden beast` number, since 610 + 5 + 2 + 40 + 9 = 666.

It is not a de Polignac number, because 61052409 - 2¹⁵ = 61019641 is a prime.

It is a super-3 number, since 3×61052409³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (61052489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34074 + ... + 35820.

It is an arithmetic number, because the mean of its divisors is an integer number (4022148).

Almost surely, 2^61052409 is an apocalyptic number.

It is an amenable number.

61052409 is a deficient number, since it is larger than the sum of its proper divisors (35479143).

61052409 is a wasteful number, since it uses less digits than its factorization.

61052409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117 (or 2114 counting only the distinct ones).

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

The square root of 61052409 is about 7813.6040979819. The cubic root of 61052409 is about 393.7624225862.

The spelling of 61052409 in words is "sixty-one million, fifty-two thousand, four hundred nine".