61449601 has 4 divisors (see below), whose sum is σ = 61856704. Its totient is φ = 61042500.

The previous prime is 61449599. The next prime is 61449607. The reversal of 61449601 is 10694416.

61449601 = T₆₃₉₉ + T₆₄₀₀ + T₆₄₀₁.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61449601 - 2¹ = 61449599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61449607) 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, 203325 + ... + 203626.

It is an arithmetic number, because the mean of its divisors is an integer number (15464176).

Almost surely, 2^61449601 is an apocalyptic number.

61449601 is the 6401-st centered triangular number.

It is an amenable number.

61449601 is a deficient number, since it is larger than the sum of its proper divisors (407103).

61449601 is a wasteful number, since it uses less digits than its factorization.

61449601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407102.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 61449601 is about 7838.9795892067. The cubic root of 61449601 is about 394.6144847304.

The spelling of 61449601 in words is "sixty-one million, four hundred forty-nine thousand, six hundred one".