151354421 has 4 divisors (see below), whose sum is σ = 157935072. Its totient is φ = 144773772.

The previous prime is 151354381. The next prime is 151354433. The reversal of 151354421 is 124453151.

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: 124453151 = 179 ⋅695269.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151354421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151354471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3290291 + ... + 3290336.

It is an arithmetic number, because the mean of its divisors is an integer number (39483768).

Almost surely, 2^151354421 is an apocalyptic number.

It is an amenable number.

151354421 is a deficient number, since it is larger than the sum of its proper divisors (6580651).

151354421 is an equidigital number, since it uses as much as digits as its factorization.

151354421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580650.

The product of its digits is 2400, while the sum is 26.

The square root of 151354421 is about 12302.6184611244. The cubic root of 151354421 is about 532.9237031263.

The spelling of 151354421 in words is "one hundred fifty-one million, three hundred fifty-four thousand, four hundred twenty-one".