61445454 has 32 divisors (see below), whose sum is σ = 140714496. Its totient is φ = 17522400.

The previous prime is 61445453. The next prime is 61445467. The reversal of 61445454 is 45454416.

It is a super-2 number, since 2×61445454² = 7551087634532232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61445453) 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, 28399 + ... + 30485.

It is an arithmetic number, because the mean of its divisors is an integer number (4397328).

Almost surely, 2^61445454 is an apocalyptic number.

61445454 is an abundant number, since it is smaller than the sum of its proper divisors (79269042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61445454 is a wasteful number, since it uses less digits than its factorization.

61445454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800.

The product of its digits is 38400, while the sum is 33.

The square root of 61445454 is about 7838.7150732757. The cubic root of 61445454 is about 394.6056075202.

The spelling of 61445454 in words is "sixty-one million, four hundred forty-five thousand, four hundred fifty-four".