45471861 has 12 divisors (see below), whose sum is σ = 68114592. Its totient is φ = 30314412.

The previous prime is 45471859. The next prime is 45471863. The reversal of 45471861 is 16817454.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45471859) and next prime (45471863).

It is not a de Polignac number, because 45471861 - 2¹ = 45471859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45471863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93321 + ... + 93806.

It is an arithmetic number, because the mean of its divisors is an integer number (5676216).

Almost surely, 2^45471861 is an apocalyptic number.

It is an amenable number.

45471861 is a deficient number, since it is larger than the sum of its proper divisors (22642731).

45471861 is an equidigital number, since it uses as much as digits as its factorization.

45471861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187142 (or 187130 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 45471861 is about 6743.2826575786. The cubic root of 45471861 is about 356.9282392307.

It can be divided in two parts, 45 and 471861, that added together give a triangular number (471906 = T₉₇₁).

The spelling of 45471861 in words is "forty-five million, four hundred seventy-one thousand, eight hundred sixty-one".