4721151 has 4 divisors (see below), whose sum is σ = 6294872. Its totient is φ = 3147432.

The previous prime is 4721149. The next prime is 4721153. The reversal of 4721151 is 1511274.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (4721149) and next prime (4721153).

It is not a de Polignac number, because 4721151 - 2¹ = 4721149 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4721153) 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, 786856 + ... + 786861.

It is an arithmetic number, because the mean of its divisors is an integer number (1573718).

Almost surely, 2^4721151 is an apocalyptic number.

4721151 is a deficient number, since it is larger than the sum of its proper divisors (1573721).

4721151 is a wasteful number, since it uses less digits than its factorization.

4721151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573720.

The product of its digits is 280, while the sum is 21.

The square root of 4721151 is about 2172.8209774392. The cubic root of 4721151 is about 167.7577645561.

The spelling of 4721151 in words is "four million, seven hundred twenty-one thousand, one hundred fifty-one".