146451261 has 16 divisors (see below), whose sum is σ = 214786368. Its totient is φ = 88755920.

The previous prime is 146451257. The next prime is 146451269. The reversal of 146451261 is 162154641.

It is not a de Polignac number, because 146451261 - 2² = 146451257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146451269) 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, 14346 + ... + 22331.

It is an arithmetic number, because the mean of its divisors is an integer number (13424148).

Almost surely, 2^146451261 is an apocalyptic number.

146451261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

146451261 is a deficient number, since it is larger than the sum of its proper divisors (68335107).

146451261 is an equidigital number, since it uses as much as digits as its factorization.

146451261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36713 (or 36691 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 146451261 is about 12101.7048798919. The cubic root of 146451261 is about 527.1056909651.

It can be divided in two parts, 1464 and 51261, that added together give a palindrome (52725).

The spelling of 146451261 in words is "one hundred forty-six million, four hundred fifty-one thousand, two hundred sixty-one".