146942551 has 4 divisors (see below), whose sum is σ = 167934352. Its totient is φ = 125950752.

The previous prime is 146942533. The next prime is 146942557. The reversal of 146942551 is 155249641.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146942551 is a prime.

It is a super-2 number, since 2×146942551² = 43184226588775202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146942551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146942557) 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, 10495890 + ... + 10495903.

It is an arithmetic number, because the mean of its divisors is an integer number (41983588).

Almost surely, 2^146942551 is an apocalyptic number.

146942551 is a deficient number, since it is larger than the sum of its proper divisors (20991801).

146942551 is an equidigital number, since it uses as much as digits as its factorization.

146942551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20991800.

The product of its digits is 43200, while the sum is 37.

The square root of 146942551 is about 12121.9862646350. The cubic root of 146942551 is about 527.6944482028.

The spelling of 146942551 in words is "one hundred forty-six million, nine hundred forty-two thousand, five hundred fifty-one".