61951402 has 4 divisors (see below), whose sum is σ = 92927106. Its totient is φ = 30975700.

The previous prime is 61951367. The next prime is 61951403. The reversal of 61951402 is 20415916.

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

It can be written as a sum of positive squares in only one way, i.e., 57744801 + 4206601 = 7599^2 + 2051^2 .

It is not an unprimeable number, because it can be changed into a prime (61951403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15487849 + ... + 15487852.

Almost surely, 2^61951402 is an apocalyptic number.

61951402 is a deficient number, since it is larger than the sum of its proper divisors (30975704).

61951402 is a wasteful number, since it uses less digits than its factorization.

61951402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30975703.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 61951402 is about 7870.9212929618. The cubic root of 61951402 is about 395.6857223152.

The spelling of 61951402 in words is "sixty-one million, nine hundred fifty-one thousand, four hundred two".