61487445 has 16 divisors (see below), whose sum is σ = 99285120. Its totient is φ = 32491584.

The previous prime is 61487429. The next prime is 61487467. The reversal of 61487445 is 54478416.

It is not a de Polignac number, because 61487445 - 2⁴ = 61487429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17169 + ... + 20438.

It is an arithmetic number, because the mean of its divisors is an integer number (6205320).

Almost surely, 2^61487445 is an apocalyptic number.

It is an amenable number.

61487445 is a deficient number, since it is larger than the sum of its proper divisors (37797675).

61487445 is a wasteful number, since it uses less digits than its factorization.

61487445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37724.

The product of its digits is 107520, while the sum is 39.

The square root of 61487445 is about 7841.3930522580. The cubic root of 61487445 is about 394.6954764466.

The spelling of 61487445 in words is "sixty-one million, four hundred eighty-seven thousand, four hundred forty-five".