61400445 has 16 divisors (see below), whose sum is σ = 99626112. Its totient is φ = 32285120.

The previous prime is 61400387. The next prime is 61400483. The reversal of 61400445 is 54400416.

It is not a de Polignac number, because 61400445 - 2¹¹ = 61398397 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, 27762 + ... + 29891.

It is an arithmetic number, because the mean of its divisors is an integer number (6226632).

Almost surely, 2^61400445 is an apocalyptic number.

It is an amenable number.

61400445 is a deficient number, since it is larger than the sum of its proper divisors (38225667).

61400445 is a wasteful number, since it uses less digits than its factorization.

61400445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57732.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 61400445 is about 7835.8436048711. The cubic root of 61400445 is about 394.5092340105.

The spelling of 61400445 in words is "sixty-one million, four hundred thousand, four hundred forty-five".