2151950 has 24 divisors (see below), whose sum is σ = 4041408. Its totient is φ = 852480.

The previous prime is 2151943. The next prime is 2151971. The reversal of 2151950 is 591512.

2151950 = 131² + 132² + ... + 205².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9539 + ... + 9761.

It is an arithmetic number, because the mean of its divisors is an integer number (168392).

2^2151950 is an apocalyptic number.

2151950 is a deficient number, since it is larger than the sum of its proper divisors (1889458).

2151950 is a wasteful number, since it uses less digits than its factorization.

2151950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 2151950 is about 1466.9526236385. The cubic root of 2151950 is about 129.1052963172.

The spelling of 2151950 in words is "two million, one hundred fifty-one thousand, nine hundred fifty".