61401445 has 16 divisors (see below), whose sum is σ = 88640640. Its totient is φ = 39887424.

The previous prime is 61401427. The next prime is 61401449. The reversal of 61401445 is 54410416.

It is a cyclic number.

It is not a de Polignac number, because 61401445 - 2²³ = 53012837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61401449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45502 + ... + 46831.

It is an arithmetic number, because the mean of its divisors is an integer number (5540040).

Almost surely, 2^61401445 is an apocalyptic number.

It is an amenable number.

61401445 is a deficient number, since it is larger than the sum of its proper divisors (27239195).

61401445 is a wasteful number, since it uses less digits than its factorization.

61401445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92364.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 61401445 is about 7835.9074139502. The cubic root of 61401445 is about 394.5113757273.

The spelling of 61401445 in words is "sixty-one million, four hundred one thousand, four hundred forty-five".