2979157 has 4 divisors (see below), whose sum is σ = 2984716. Its totient is φ = 2973600.

The previous prime is 2979149. The next prime is 2979173. The reversal of 2979157 is 7519792.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2515396 + 463761 = 1586^2 + 681^2 .

It is a cyclic number.

It is not a de Polignac number, because 2979157 - 2³ = 2979149 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2979107) 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, 1878 + ... + 3079.

It is an arithmetic number, because the mean of its divisors is an integer number (746179).

2^2979157 is an apocalyptic number.

It is an amenable number.

2979157 is a deficient number, since it is larger than the sum of its proper divisors (5559).

2979157 is an equidigital number, since it uses as much as digits as its factorization.

2979157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558.

The product of its digits is 39690, while the sum is 40.

The square root of 2979157 is about 1726.0234644987. The cubic root of 2979157 is about 143.8901715280.

It can be divided in two parts, 2979 and 157, that added together give a square (3136 = 56²).

The spelling of 2979157 in words is "two million, nine hundred seventy-nine thousand, one hundred fifty-seven".