61602451 has 4 divisors (see below), whose sum is σ = 61620912. Its totient is φ = 61583992.

The previous prime is 61602449. The next prime is 61602473. The reversal of 61602451 is 15420616.

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 61602451 - 2¹ = 61602449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61602421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2671 + ... + 11416.

It is an arithmetic number, because the mean of its divisors is an integer number (15405228).

Almost surely, 2^61602451 is an apocalyptic number.

61602451 is a deficient number, since it is larger than the sum of its proper divisors (18461).

61602451 is a wasteful number, since it uses less digits than its factorization.

61602451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18460.

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

The square root of 61602451 is about 7848.7228897445. The cubic root of 61602451 is about 394.9414024062.

The spelling of 61602451 in words is "sixty-one million, six hundred two thousand, four hundred fifty-one".