146801257 has 4 divisors (see below), whose sum is σ = 149924736. Its totient is φ = 143677780.

The previous prime is 146801251. The next prime is 146801287. The reversal of 146801257 is 752108641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 752108641 = 149 ⋅5047709.

It is a cyclic number.

It is not a de Polignac number, because 146801257 - 2²³ = 138412649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146801251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561669 + ... + 1561762.

It is an arithmetic number, because the mean of its divisors is an integer number (37481184).

Almost surely, 2^146801257 is an apocalyptic number.

It is an amenable number.

146801257 is a deficient number, since it is larger than the sum of its proper divisors (3123479).

146801257 is an equidigital number, since it uses as much as digits as its factorization.

146801257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123478.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 146801257 is about 12116.1568576839. The cubic root of 146801257 is about 527.5252574326.

Adding to 146801257 its reverse (752108641), we get a palindrome (898909898).

The spelling of 146801257 in words is "one hundred forty-six million, eight hundred one thousand, two hundred fifty-seven".