61449902 has 4 divisors (see below), whose sum is σ = 92174856. Its totient is φ = 30724950.

The previous prime is 61449901. The next prime is 61449907. The reversal of 61449902 is 20994416.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61449901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15362474 + ... + 15362477.

It is an arithmetic number, because the mean of its divisors is an integer number (23043714).

Almost surely, 2^61449902 is an apocalyptic number.

61449902 is a deficient number, since it is larger than the sum of its proper divisors (30724954).

61449902 is a wasteful number, since it uses less digits than its factorization.

61449902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30724953.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 61449902 is about 7838.9987881106. The cubic root of 61449902 is about 394.6151290458.

The spelling of 61449902 in words is "sixty-one million, four hundred forty-nine thousand, nine hundred two".